Connection too unstable error

[prime hornet]

📝 Bug Report Template
Title: Connection too unstable error
Reproduction Steps: Attempting to join MP game
Repro Rate: Every Time
In-Game Date & Time: N/A
Players & Platform: Host (Xbox) P2 (Xbox) P3 (Me, PC)
Game Version: 1.2
Input Mode: Keyboard & Mouse
PC Specs:
Processor Intel(R) Core(TM) i7-9700K CPU @ 3.60GHz 3.60 GHz
Installed RAM 16.0 GB
Storage 224 GB SSD ADATA SU650, 1.82 TB HDD Intel Raid 0 Volume
Graphics Card NVIDIA GeForce RTX 2070 SUPER (8 GB)
Device ID 73033F4C-4F61-4662-8456-D3EBDB4C53B9
Product ID 00326-10000-00000-AA748
System Type 64-bit operating system, x64-based processor
Pen and touch Pen support
Attachments (if available):

I don't have problems joining any other online games so i'm sure it isn't my internet but I could be wrong?

[faint walrus]

Hello @prime hornet!
Thank you for reaching out and for sharing the detailed report.

May I ask if the issue still persists after restarting the game? Also, did this happen right from the start, or were you able to join the session before and only later encountered the prompt above?

[prime hornet]

It continues after restarting the game and restarting my computer. This has been an issue from the beginning. I was able to play with my friends when I played on the Xbox so it seems to be an issue with steam and Xbox connection

[polar pivot]

Yes. I'm facing the same issue playing with my friends from console. I'm from Steam.

[frigid bane]

Same issue has been happening for days. I can join stream to steam just fine. But our Xbox friend gets this error joining us regardless if they host or not. We can’t join them and they can’t join us.

[quick mauve]

Yes issues still persists from XBOX to Steam

[faint walrus]

Hello everyone @prime hornet @frigid bane @polar pivot @quick mauve! Thank you for confirming!

If you happen to play again, could you share a video of when you try to join the session? A phone recording is perfectly fine.

In the meantime, I’ll relay this to the team for further checking. Thank you so much!

[faint walrus]

Thank you, Franco! I’ve shared your screenshot with the team, and we’ll investigate this further. If you notice any updates or new details about the issue, please let us know.

We really appreciate your patience in the meantime!

[polar pivot]

Host: Xbox Series S (WillBuenoo)
Invited: Steam (Josh)

The video is from Steam, the photo is from Xbox

Host: Steam (Josh)
Invited: Xbox Series S (WillBuenoo)

The video is from Xbox, the photo is from Steam

We are both connected to the same wifi

We tested here connecting the Xbox with the mobile as a router and it worked 🙁

We had this same issue with another game called Tower Borne. We seems to be a problem related to IPv6. We couldn't fix it with the other game, we just gave up. However I don't want to give up Coral Island Co-op just because this problem.

@faint walrus can we do something to solve this?

When I was trying to fix this problem with my route, I see that some games try to connect server with ip v6 connection but the router doesn't allow it because it tries to connect using a tunnel from Microsoft called Teredo. But this Teredo tunnel is not supported by my router 🙁

I guess this Teredo tunnel is being used by Coral Island on Xbox as Toner Borne.

Maybe I'll have to set my route in bridge mode and buy a personal router to connect wifi 😢

Can you share this with Dev team please?

[faint walrus]

Hi JoshLight, thanks a lot for sharing these details with us! The info about IPv6/Teredo and your router setup is super helpful — I’ll pass this on to the team to check.

Really appreciate your patience and for sticking with Coral Island co-op. 💙
We’ll keep you posted if there are any updates!

[faint walrus]

Hello everyone @prime hornet @quick mauve @frigid bane! Sorry for pinging you again.

As JoshLight's cases above, could you please try connecting your Xbox through a different network (like a mobile hotspot) to check if co-op works that way?

Let us know how it goes. Thanks a lot! 🙏

[tribal willow]

For the Xbox Cloud co-op with another player via Steam this workaround unfortunately didn't work out, but maybe for the others🤞

[frigid bane]

sorry my friend does not have mobile hotspot to use do this

so one thing we did was go through her router settings, enable dmz, add forwarding ports for xbox and then we have to literally clear her mac address (xbox setting), make sure NAT is open and restart xbox every time we play for her to join us

and steam has to host

if she hosts, it doesn't work

[prime hornet]

I did not have any luck with this either

[faint walrus]

Hello everyone,
Sorry for the delayed response. 🙇‍♀️ After the hotfix update (v1.2-1239) here: ⁠https://discord.com/channels/623097219628662784/1027403332790272000 ⁠, are you still experiencing the connection issue? If so, does the prompt still show the same message? Thank you!

[dry pelican]

Hi I got sent here via https://discord.com/channels/623097219628662784/1405695099215806484
I still get this error, even after the hotfix.

[austere hemlock]

I came here due to the same issue. Both myself and friend are on PC and on Steam but get the same error every time.

We have tried back after the hot fix as we have never been able to connect but with no success

[sullen flume]

This is what i get, both on Steam, both tried hosting, same error. 🫡

[lethal current]

Me and my fiance are still experiencing this issue me on the steam deck and her on a Xbox one x I tried restarting my router and doing mobile hotspot and neither fixed the issue

[faint walrus]

Hello everyone! A quick update - we’re still working on fixing the remaining connection issues so multiplayer can feel smoother and more stable.

If you’re still running into problems, a quick workaround is to try switching or restarting your connection for now. We’ll keep digging into it, and really appreciate your patience. 💙

[dry pelican]

My patience is wearing thin 😛 just kiddin. But the restart option is not working for me at least. Yesterday I couldn't even connect once to my wife playing the xbox and me playing on pc. Restarted several times, to no avail. We were trying for like 45 mins till 70 mins per session

at least laundry gets folded this way..

[wintry marten]

first time experiencing this, been playing together for almost two weeks no problem with internet connection
Host play on PS5 and me on PC steam
We have tried Host restart game , me restart PC and modem still can't fix it

[hard oasis]

Still experiencing “unstable connection” error. Both players playing on steam. Changed the internet connections to mobile and nothing, restart PC’s, still nothing.

[golden jetty]

I'm also still getting this error when trying to play with my sister. I'm on xbox and she's on steam

we played a few days before after trying a few times, but we're trying to play again now and it's giving the same errors. doesn't matter who the host is

[grim wagon]

Sister just bought and downloaded the game but it still says "Unstable Connection" everytime she tries to join and I cannot join a game she hosts either and it says the same thing. Anyone have any fixes

[restive cliff]

I am having this same issue - I am on Steam and my friend is on Xbox. We keep getting "Unstable Connection" and are able to play other multiplayer games together, so it cannot be an internet problem.

[dry pelican]

welp. the hotfix didn't fix anything for me. still getting the same error. I'm connecting via steam to the xbox downstairs. so same network. Only thing changed that there is now a xbox logo next to the game session...

[round badge]

Yeah still having this issue, both players on steam.

[hard oasis]

Having the issue still even after the hot fix, steam players for both and good network connection

[unique ivy]

Even Xbox to Xbox I can’t join or host. Keeps saying the session has ended when I try to join and says the same thing for them when they try to join me.

[halcyon oyster]

hello! this has been happening with my husband and i both on xbox as well. he is able to host but it keeps saying there are connection issues on my end, or it just freezes on the “connecting to server…” screen. have there been any fixes for this yet?

[true shore]

Hello guys this is becoming really frustrating we cannot play it, any news on the incident? We are both on xbox and it's impossible to connect. I would like to add that my connection is very stable

[pseudo dagger]

Hello ! Same issue with my friend. We start playing yesterday and both players on PC steam and can't play the game... We have only 4h of playing time.

[barren ether]

Hello, is there any way to fix this issue? It happens to me and I can not join to my friend's server

[true shore]

I just try again until it works..

[bright scaffold]

Same problem with Steamdeck/XBOX Series X. No difference if Steam or XBOX is hosting the game. We have the problem since the multiplayer update released.

Right now I'm having 3h ingame time on Steam just with trying to connect, not a single minute actually playing. Gets a little bit frustrating...

[finite edge]

I bought this to play multiplayer and it’s still happening on XBOX 9 weeks after buying the game. Ugh.

[restive cliff]

Still getting the same exact error as weeks before...Steam trying to play with XBOX User

[faint walrus]

Hi everyone,

Thank you so much for sharing all this information with us and for letting us know that some of you are still experiencing this issue. We sincerely apologize that it’s still persisting. Please rest assured that all of your reports have been forwarded to the relevant teams, and they’re currently investigating the matter. 🙇‍♀️

From the current findings, it appears that the issue may be related to the player’s connection. As a temporary workaround, we recommend trying to switch your internet connection to see if that allows you to play co-op successfully.

That said, since many of you mentioned having a stable connection, we’d like to narrow things down further. Could you please run a quick internet speed test at https://www.speedtest.net/ and share the results with us? It would also be very helpful if you could let us know whether you’re using Wi-Fi or a LAN cable.

Once again, we’re truly sorry that some of you are still encountering this issue, and we greatly appreciate your patience and help as we continue investigating. 🙏

[finite edge]

Hi! From my XBOX Series X (wired ethernet)

[sacred viper]

Same problem with me Xbox to Xbox

It worked fine 2-3 days ago then suddenly nothing

[faint walrus]

Hello! Thank you for confirming and for sharing the details!

• Could you let us know if you were hosting the session or joining another player’s game?
• What platform is the other player using?
• Did the “Connection Too Unstable” prompt appear every time the issue occurred?
  If possible, please share a short video or screenshot of the in-game prompt.

That would be super helpful for our investigation. Thank you so much! 🙌

[faint walrus]

Hi! Thank you for confirming and for sharing the details too.

• Could you let us know if you were hosting the session or joining another player’s game?
• Did you get the “Connection Too Unstable” prompt appear every time the issue occurred too?

If possible, please share a short video or screenshot of the in-game prompt. Thanks a bunch! 🙌

[finite edge]

Happens both when hosting (XBOX) and trying to connect to another player (Steam). It did recognize the game that I was trying to connect to a few times, because it saved the game on my multiplayer menu and I was able to see the day/season of my friend’s game.

I deleted Coral Island, reinstalled, and we tried again but still got “too unstable”.

[faint walrus]

Got it! Could you confirm whether Cross-play is enabled or disabled in both your and your friend’s settings?

You can check it by going to Settings → Multiplayer → Enable Cross-play.
If you get a chance to play again, could you try toggling it — both enabled and disabled — to see if that makes any difference? Thank you so much! 🙏

[finite edge]

Yes! We both had on. We can try again tomorrow too. Should we start a new save file as well?

[faint walrus]

Yes, please! If you could try both ways — with your existing file and a new one — that would be super helpful. 🙌

If possible, please also record a short video while testing it (a phone recording is totally fine!). It’ll really help the team understand what’s happening.

Thank you so much again for your help!

[sacred viper]

It happens when I host I haven’t tried joining a multiplayer but I did try making a new save and still had the same problem and we did manage to play last night we had to keep trying over and over again and it eventually worked took a lot of attempts tho

[bright scaffold]

Same problem with LAN and Wi-Fi. This test has been run while other devices were using the Wi-Fi too. Most times it´s 100Mbps.
I also tryed to activate/deactivate crossplay. The only combination with a different outcome was hosting on XBOX with deactivatet crossplay and trying to join with the Steamdeck. Here I got the error "Host did not activate crossplay" (I don´t know the exact error code, I play in German)
Also no difference with new between existing files and new ones.
There are no problems while hosting a game on both devices, it´s just not possible to join.

[wispy verge]

We were having this issue earlier even though we were both on Steam/PC. None of us could connect to each other, no matter who was hosting. However, we figured out the issue was fixed after we both synced the system clock on Windows & disabled crossplay on the Settings menu. Will keep watching to see if the error happens again.

[finite edge]

Following up! I toggled on/off/on and then started playing solo in my multiplayer world and it booted me off before I could invite anyone in. (happened after about 3-5min, I checked the mailbox and then broke a few rocks)

[faint walrus]

Thank you for sharing your experience here, and we’re glad to hear that you were eventually able to play together after several attempts! 🙏

Could you let us know what platform you’re using, as well as your partner’s platform?

[faint walrus]

Hi! Thank you so much for testing those different setups and sharing the detailed info. 🙌

Could you please share a short video showing what happens when you try to join the session, including the part where you activate and deactivate crossplay? A phone-recorded video works perfectly fine.

This will help the team better understand the behavior on your end. Thank you!

[faint walrus]

Hello umi! Thank you so much for sharing the update and what worked for you.

Just to clarify, when you mentioned syncing the system clock, did you mean adjusting your Windows date and time settings to sync automatically with the internet? 😮

Also, just to confirm, previously, if you re-enable the Crossplay setting, does the connection issue start happening again?

[faint walrus]

Hi! Thank you for the follow-up and for sharing the details. 🙌

By any chance, do you happen to have a video recording of when you toggled the Crossplay setting and got disconnected? This would help the team see the issue more clearly.

[wispy verge]

Yes. The option to sync automatically with the internet was already previously enabled, so we disabled the option and re-enabled it to "force resync"

Regarding the crossplay option:

• If we both enable it, he is still able to join normally. I suppose the problem really was the desynced system clock (we both resynced it, so I'm not sure who was out of sync). I also had this issue in other games with multiplayer lobbies, so it's not surprising for me.
• Interestingly, if I enable the option while the other party leaves it disabled, he gets an error upon trying to join (saying crossplay is disabled).

[sacred viper]

Both Xbox series s both wired connection

[faint walrus]

That’s awesome, thank you so much for testing that out and sharing all those details! 🙏

We’ll relay this information to the team so they can take a closer look.

Appreciate you taking the time to dig into it and help us narrow things down!

[faint walrus]

Got it! Thanks so much for confirming.
I’ll add this to the team’s notes. If the issue happens again, please don’t hesitate to let us know! 🙌

[faint walrus]

Hey @finite edge @bright scaffold! The team would like to ask for your help checking the network side of things for Xbox players — could you please confirm your NAT type?
Ideally, it should be Open for smoother cross-platform connections.

You can follow the steps in this Xbox guide to check it:
🔗 https://support.xbox.com/en-US/help/hardware-network/connect-network/xbox-one-nat-error

Once you have that info, please share it here! It’ll really help us narrow down the cause. Thank you so much!

[finite edge]

It’s Open! 👍

[faint walrus]

Got it, thank you!
Just to confirm, have you ever changed this setting before?

And if possible, could you also share a screenshot or photo showing your NAT type? That would be super helpful—thank you!

[finite edge]

Never adjusted that setting before

[faint walrus]

Tysm! Just to help us better understand the situation and the prompts you’re seeing:

• When you play solo using your multiplayer save, do you get the message “The connection was lost. Your network may be unstable or disconnected” after 3-5 min playing, right?
• When you try joining your friend on Steam, does it show “Connection too unstable”?
• And when your friend tries joining you, does it also show “Connection too unstable”?

This will help us pinpoint where the issue is happening.

[finite edge]

Yes to all 3!

It does save my friend’s game in the multiplayer menu though, so some connection happened just not able to fully join.

I can try again later this evening with a new save.

[bright scaffold]

Hey, sorry that it took me so long to answer.

I have no clue why but my NAT-Type was actually "moderate" (what is strange, because in the past i opened all importend ports manually cause of multiplayer issues) so i completely deleted the xbox from my router, set it up with a fix ip, the ability of automatic port release and upnp activated.

After that the NAT-Type was again "open".

Sadly it didn't do anything with the connection problem.

Later or tomorrow i will post a video of the connection-trys with enabled/disabled crossplay on both devices.

[faint walrus]

Noted, thank you for confirming! 🙏
I’ll pass these details along to the team.
And yes, if you can try again with a new save later and notice anything new, please let us know. Thanks so much!

[faint walrus]

Hey! No worries at all, and thank you for the detailed update!
Really appreciate you taking the time to check your network settings and share what you tried.

Got it noted that the NAT type is now open, but the issue still happens. Could you let us know what prompt you've received now?

A video of the connection attempts (with crossplay on/off) would be super helpful for the team to review — thank you so much.

[finite edge]

Hi! Update!

I played solo on my multiplayer save last night and was able to complete a full day with no disconnect or lag. 😁 🤞 All I did was basic farming for now but will try again tonight!

[humble hatch]

Hello! As I see there is no solution (yet) to this problem? Have been trying all evening, and all my friends are in but i am not.

[faint walrus]

Hi! Thanks so much for the update. Glad to hear you were able to play a full day solo without any disconnect or lag!

When you have a chance, could you also try joining another player’s session or have someone join yours to see if the connection works in multiplayer again? That info would be super helpful for us to confirm if the issue is fully resolved.

Appreciate your help and keep us posted! 🙌

[faint walrus]

Hi there, I’m sorry to hear you’ve encountered this issue too. 🙇‍♀️
Could you please help confirm a few details so we can look into it further?

• How many players are in your session?
• What platform are you and the other player(s) using?
• Does the “Connection Too Unstable” prompt appear every time you try to join?

If possible, could you also share a short video or screenshot of the in-game prompt? That would be really helpful. Thank you so much!

[finite edge]

Failed trying to connect and host, XBOX to friend on Steam. “Connection too unstable” 😭 seems to be holding when I'm on solo in the multiplayer save though.

[humble hatch]

4 players, my friend is the host. We are all playing on PC, i have been able to join this is the second time playing and i was the only one not able to join, and yes tje connection too unstable prompt comes up every time.

The weird thing is, it does give me like the little music thats playing when you are able to join.

[faint walrus]

That’s unfortunate
Just to clarify, when you try to host or join from Xbox to Steam, does the "Connection too unstable" message appear on both sides?

If you have a chance to try again, could you please share:

• A screenshot or video of what happens when you host and your friend tries to join
• A screenshot or video of what happens when you try to join your friend’s game
• A view of the Multiplayer settings from both your side and your friend’s

These details will really help us pinpoint the issue. Thank you so much for helping us troubleshoot this! 🙏

[faint walrus]

Thanks for the quick update! 🙏 That does sound odd, especially since you were able to join before.

To help us dig a bit deeper, could you please clarify a few things?

• Are all 4 of you playing on PC through Steam?
• When was the last time you were able to join without any issues? Was it before the latest hotfix (v1.2-1243)?
• Could you run a quick internet speed test at https://www.speedtest.net/
  and share the results with us?
  Also, let us know if you're using Wi-Fi or a LAN cable.

Thank you so much for your help! 🙇‍♀️

[humble hatch]

Yes all 4 on pc an through steam
Last time was before the update/hotfix

This is with wifi, i can check when i am back home tonight on pc where i have a cable

[outer lake]

Anyone still having this problem ? I was hopping to play multiplayer tonight but I have been getting that problem for days now

[humble hatch]

Yeah i am still having the problem too unfortunately.

[restive cliff]

Same - I am on Steam and cannot connect to my friend who is on XBOX. This has been ongoing since multiplayer launch.

[faint walrus]

Thanks for the reply, Sharloki! Have you tried changing your internet connection to see if it resolves the issue? And could you send a screenshot of the error message that showed up after your attempt to log in?

Hello @outer lake @restive cliff,
So sorry to hear you’ve encountered this issue too. 🙇‍♀️
Could you please help confirm a few details since we are still gathering more info for this one?

• How many players are in your session?
• What platform are you and the other player(s) using?
• Does the “Connection Too Unstable” prompt appear every time you try to join?

If possible, could you also share a short video or screenshot of the in-game prompt? That would be really helpful. Thank you so much!

[outer lake]

It happens every time
And it happens both ways if I try to join on ps5 to Xbox and if I try to join on Xbox to ps5
I usually try repeatedly about 10 tries then switch to trying another 10 from the other console
And I have no screen shot currently but after about 30 second the “connection too unstable , please try again later “ message pops up

I tried switching from wifi to direct cable but still does it
I tried using a hotspot and still does it
I can get my friend on his ps5 to join my ps5
But me and my wife can’t join each other games on ps5 to Xbox and vice versa

[restive cliff]

Hi! I am on Steam and have no problems playing solo. I am unable to connect to my friends game @finite edge who uses Xbox. The same error is coming up and continues to appear every time I attempt to join. We play other games together (Overwatch 2) and that has no connectivity issues which means it cannot be our internet.

[restive cliff]

What's also strange is that it picks up and recognizes his save file but it still will not allow me to connect by invite code or launching this file.

[tulip flicker]

Could the devs actually look into this? a lot of people are experienceing the same problem after the update , same error message and around the same time (later in the day) , it clearly has to do with the servers or the last update screwed something up. its not from our ends.

Really frustrating

[humble hatch]

Nothing changes. I can share a screenshot but its the same a person above her sends. It keeps happening. At this point i am missing out on playing with friends. Can you guy please look at it? Instead of asking the same questions? Its nothing on my end!

[faint walrus]

Hey everyone,
@finite edge @restive cliff @bright scaffold @humble hatch @outer lake @tulip flicker

We’re really sorry for the trouble this issue has caused — we completely understand how frustrating it is not being able to play with your friends. 🙏

Thank you so much to everyone who’s shared details and gone through the troubleshooting steps with us — we know some of the questions might feel repetitive, but this helps us gather as much info as possible to understand what’s happening.

We’ve relayed all the reports and details to the team so they can take a closer look at this matter. We’ll share an update once we have more info, and please let us know if you notice any changes on your end too.

Really appreciate your patience and help! 🙌

[young slate]

Good morning,
are there any updates yet? Because this issue really sucks and for us this game is not really playable anymore, not because of bugs or because we don't like it, only reason is that we can't join each other session in the evening...

[faint walrus]

Hello Phoeniz,
Thank you so much for checking in — and I’m really sorry this issue is still getting in the way of your co-op time. I completely understand how frustrating that must be, especially when all you want to do is play together in the evenings. 😞

The team is still actively investigating this based on all the info shared by you and other players, and they’re working really hard on it.

We don’t have an exact ETA yet, but as soon as we have a confirmed fix or update, we’ll post it here in the thread.

Thank you again for your patience and for sticking with us! ✨

[tame bane]

Hello, I am experiencing multiplayer connection issues as well. Mine is odd in that I was hosting the game on my desktop computer and while we would get occasional disconnects (where even I as host would get disconnected "from the server" and latency issues, we only lost a day's progress occasionally. But I bought a new gaming laptop and we cannot connect at all using that. Other games work just fine between my laptop and her desktop, but not coral island. We get a "connection too unstable" message.

Note I can log back into my desktop and she can connect, just not from the laptop. I have also had her host a game and I was unable to connect from the laptop.

PC info:
My Desktop that works: 7800X3D processor, 3080 graphics card, 32 GB RAM, 2 TB SSD.

My Laptop that does not: Legion Pro 7i, Core Ultra 275 processor and 5080 graphics. 32 GB RAM, 2 TB SSD.

My wife's computer is a 7800X3D processor with a 3060, 32 GB RAM and a 2TB drive.

Tried it wifi and wired. I'm going to try hotspotting from my phone next, but I don't expect that to help so I will only update the post if that does actually work.
Same game version on all of them: 1.2-1243

[faint walrus]

Hi there! Thank you for sharing your experience here. 🙏

The team is currently working on fixing this issue, but we’d love to gather a bit more info from your case as well.

Could you please help confirm these details:

• How many players are in your session?
• What platform are you and the other player(s) using (Steam, Xbox)?
• Does the “Connection Too Unstable” prompt appear every time you try to join, or when hosting?

If you can, a short video or screenshot of the prompt would help a lot, too.
Thank you so much for your help!

[rich crown]

Hello @humble hatch @wispy verge @pseudo dagger @hard oasis @round badge @sullen flume @austere hemlock

We’ve just released a new Beta hotfix that may help resolve the “Your connection is too unstable” issue. If you’re open to trying it out, you and your friends can switch from the None branch to the Beta branch by following the steps here: #coral-beta-announcement message

Once you've tried it, please let us know how it goes! 🙏

Note: This Beta version is currently available for Steam players only. But no worries, if the fix works in Beta, it will also be included in a future update for consoles.

[tame bane]

Just 2 people. Both using steam. Connection too unstable was happening every time when the 2nd player tried to connect (again, they could connect just fine when I hosted from my desktop PC running steam)

Of note on the PC I have been able to host from I have started getting connection errors where I am "disconnected from the host" even though I AM the host. Sometimes not even able to launch the server at all, sometimes partway through a day.

[faint walrus]

Thank you so much for sharing all these details with us!

As for the “Connection Too Unstable” prompt —
We’ve just released a new Beta hotfix that may help address this issue. If you’re open to trying it, you and your wife can switch from the None branch to the Beta branch by following the steps here: ⁠#coral-beta-announcement message

Once you’ve tried it out, we’d really appreciate it if you could let us know whether it improves your connection. 🙏

[lusty pebble]

Unfortunately this would only help in cases where both players are using Steam, correct, as they would both need the beta version?

I am running into similar issues, regardless of which device we attempt to use as the host. We are using a Windows 10 PC and an XBox (2 players), both connected to the same network via WiFi. The "Connection Too Unstable" appears without fail around 15 - 30 seconds after the second person attempts to join; however, the host can always connect regardless of XBox or PC.

[faint walrus]

Thank you for checking, and yes — you are correct.

The Beta hotfix is currently available for Steam players only, since both players need to be on the same version to test the fix.
However, if the fix in the Beta branch works as expected, it will be included in a future update for consoles as well, including Xbox.

For now, we're still waiting for Steam players to help us confirm whether the hotfix resolves the “Connection Too Unstable” issue before we push it to everyone.

We really appreciate your patience, and thank you for sharing the details of your setup — it helps us a lot while continuing to investigate the Xbox side. 🙏

[lusty pebble]

Unfortunately I am not able to test with a second Steam account as the only machine I have capable of running steam is the PC (which is why I had gotten so hopeful of being able to play co-op once I got the Xbox) 😢

[tulip bane]

Hello! I am having a hard time with multiplayer. My husband and I are trying to connect, but keep getting the "connection is too unstable" error. We have tried both hosting, paused firewall, added it as an exception, restarted computers, and restarted the router. We just bought the game and wanted to play together (we each have a copy). Both of us are on steam. My husband also tried using his VPN in case it was something weird about us being in the same location.

We are on the latest patch of 1.2, I'm not at my computer so I can't check. But we made sure we were on the same one

[tulip bane]

The beta let us in!!

[faint walrus]

Thank you so much for checking and letting us know.

No worries at all — hopefully the fix works smoothly in Beta so the team can bring it to the live release later. Thank you for your patience in the meantime, we really appreciate it! 🙏

[faint walrus]

Hi! Thank you so much for sharing your experience here, and really appreciate you both testing it in the Beta as well. 🙏

Just to confirm — did both you and your husband switch to the Beta branch, and after that, you were able to play Co-op smoothly there? 😮

[tulip bane]

Yes, that is correct

Both of us switched to beta and it worked

[faint walrus]

That’s great to hear — thank you so much for confirming!
We’ll relay this update to the team so they can review the Beta fix further. Really appreciate you both taking the time to test it!

[young slate]

Great to hear 🙂 do you have any time scheduled when this will happen? Because it worked for us for a few days, also in the evening, but the issue appears now during the whole day, so we can't play at all at the moment ... Sadly we can't use Beta Version cause we're playing on PlayStation...

[tulip bane]

Unfortunately our save didn't save. We opened it up to play again and it went back to the opening sequence.

We had finished a little over a week and it's gone. I'll try and see if it saves this time.

[faint walrus]

Hi, Phoenix. Thank you so much for the follow-up, and I’m really sorry to hear the issue is now happening throughout the whole day — that must be incredibly frustrating, especially since you’re unable to play at all right now.

At the moment, we don’t have an exact schedule to share, but the team is actively testing the fix. Also, yes - the previous Beta version was available for Steam players only.

But no worries, once the fix has been verified to work in Beta, it will also be included in a future update for all platforms, including PlayStation.

We truly appreciate your patience while we work through this. 🙏

[faint walrus]

Hi Foxy, thank you for letting us know — and I’m really sorry for the inconvenience.

Just to clarify, any save file played in the Beta branch won’t transfer to the Live branch, since the Beta version is only meant for testing purposes. The Beta branch has been closed, and the team is shifting focus and gearing up for the launch.

Hopefully, once the upcoming fix is released, you’ll be able to play co-op smoothly again.

Thank you so much for helping us test and for confirming the results — your feedback really helps the team a lot! 🙏 🙌

[tulip bane]

Ooooo that makes sense! And we were able to join on the main branch!

[faint walrus]

Ahh that’s wonderful to hear — I’m really glad you and your partner were able to join again in the main branch! 🎉

Just to double-check, did you change any settings or network setup beforehand, or did it start working simply by switching back to the main branch after the Beta closed?

[tulip bane]

Just by switching to the main branch

[faint walrus]

Got it — thank you for confirming! I'll go ahead and relay this detail to the team as well.

Really appreciate the help again, Foxy!

[tulip bane]

Thank you for helping us!

[faint walrus]

Hi everyone!

Just wanted to let you know that we recently released the “connection too unstable” fix for testing on the Beta branch, and some of you got back to us saying you were finally able to join sessions and play normally. This fix has now been included in the latest release (v1.2b-1244).

If you have a moment, could you let us know if everything is working normally on your side now? Your confirmation would be super helpful for the team.

Thank you! 🙏 ✨

[lusty pebble]

I have only tried once (so grain of salt), but I was able to host from my Windows 10 PC (Steam) and join successfully from Xbox Series S (Xbox) ❤️! I'll be testing this weekend with an actual play session, but that's looking hopeful 🤞

[faint walrus]

That’s great to hear — thank you so much for trying it out and sharing the update! ❤️
We’re really glad to know the Windows → Xbox connection worked on your first test.

Whenever you get the chance to do a longer session this weekend, feel free to let us know how it goes. Fingers crossed everything stays stable. Your feedback is super helpful for the team!

Thanks again! 🙌

[lusty pebble]

We spent about an hour last night successfully playing together, but will hopefully have another chance on Sunday to test it out further

Will the guest/joining player have to create a character every time they join a hosted game (thus duplicating quests, etc), or are joined players saved with the hosted game and people have the opportunity to join as a previous player in subsequent sessions?

[young slate]

The update didn't solve the problem for us ... We were able to play during the day but now in the evening we're currently having the same issue again ... Both playing on PlayStation using the newest version v1.2b-1244 on both devices

I still think it's an issue of server capacity... Cause it mostly appeared in the evening where a lot of people are playing and the servers can't handle it ...

[faint walrus]

Thank you for checking in, and really glad to hear that you can play co-op smoothly!

And regarding the question: In Coral Island’s multiplayer, guest characters are saved inside the host’s world. This means your partner won’t need to recreate a new character each time. Their character slot will stay in your save.

The host world supports up to 4 character slots, so whenever they rejoin your session, they can simply pick the same character and continue where they left off.

Hope that helps, and happy farming together!

[faint walrus]

Thanks so much for the update, and I’m really sorry to hear the issue came back for you. 🙇‍♀️

Just to help the team narrow this down - when the problem happens in the current version, what message or prompt appears on your screen?
If you happen to play again and the issue shows up, could you also share a screenshot of the prompt message with us?

This will really help with the investigation. Thank you again for your patience! 🙏

[young slate]

Currently it's working again. I had the issue on the 5th of December, when you released the update. Since then I tried a few times and every time it worked. Maybe it was just an issue on this day. I will let you know when it happens again.

But for reference, I got the following screen (see screenshot) and we were both playing on the current version (v1.2b-1244).

[faint walrus]

Thank you for the update! Glad to hear it’s working again on your side. It’s possible that it was a temporary issue on that day, but we really appreciate you keeping an eye on it.

Thanks as well for sharing the screenshot, that's helpful.
If the problem occurs again, please don’t hesitate to let us know so we can look into it right away. 🙌

[dusk hull]

My husband and I have tried to do multiplayer twice now and both times we've gotten the "Your connection is too unstable. Please try again later" error. We both have the game on steam and our internet was working just fine. We are on version 1.2b-1245. Is there anything we can do on our end to fix this error?

[rich crown]

Hello! Is this the first time you’ve experienced this issue? Were you previously able to play co-op normally, or have you been unable to play co-op at all? 😮

[dusk hull]

I've only ever tried multiplayer the two times, so I've never been able to play co-op.

[rich crown]

When you mentioned you tried twice, did the issue persist both times, and were you unable to play co-op on both attempts as well? 😮

[dusk hull]

Correct. Regardless of who hosted or how they tried to join we have been unable to play co-op. We tried again tonight, still with no success. I have never successfully played co-op and every time we have gotten the connection unstable error. Is there any more information I can give you to help resolve this issue?

[rich crown]

Got it, thanks for the info! I know you mentioned earlier that your internet was working fine, but could you share a screenshot of your internet speed as well?
Also, could you let us know which country you were playing from, and whether you’re both playing from the same house (same IP address)? Thank you 🙂

[dusk hull]

We are in the United States and are playing in the same house (same room even). Here is a small sampling of our internet. It does tend to vary, so I tried to give you a typical range from both mine and my husband's computers. We got the error again this evening after I did the test that showed 154 Mbps.

[rich crown]

Got it, thank you for sharing this. Just to confirm, since you’re both playing on Steam, are you using a PC, laptop, or Steam Deck? Also, are you connected via Wi-Fi or LAN cable? If possible, could you try switching to a different connection (for example, a mobile hotspot) and let us know if the issue still occurs? 😮

[bright scaffold]

@faint walrus Hey, little update from my side. Yesterday I saw your posts about the beta tests and the bug-fixing updates. We downloadet the patch on steam and XBOX and for now it´s working! I will give feedback after a few hours of playing 🙂

[bright scaffold]

Update: 2 hours completely smooth multiplayer gameplay (steam hosted/xbox joined) Tomorrow we will test steam hosted/xbox on pc joined

[bright scaffold]

steam hosted/xbox on pc joined is extremely laggy and completely unplayable. Same internet connection. We went back to steam/xbox and it works completely smooth

[dusk hull]

Sorry for the slow reply, it has been really busy. We tried again with two different wi-fi connections and it worked both places. Unfortunately the place with the better connection (around 500 Mbps download 250 Mbps upload) did not work tonight (hence why I have time to respond). Same location, same internet, same day, just different time and we got the connection unstable error. We checked our internet, restarted our computers and tried moving to a different spot in the house, but no luck. Now that we've played it a bit, we love it! Multiplayer is amazing! We will try again tomorrow, but do you have any other ideas on what we can try if we encounter this problem again?

[dusk hull]

We tried again today and it worked just fine!

[rich crown]

Hi hi! Just to confirm, are you able to play co-op normally now without any issues? 😮

[dusk hull]

Yup, it has been working great!

[sullen flume]

tried once more both steam pc, one wifi one cable, did not work :((

[rich crown]

Hi hi, did you get an error/connection popup when this happened? If so, could you share a screenshot with us? That’d be super helpful! 🙏

[dusk hull]

We figured out if my husband's time wasn't synced (it gets out of sync when he switches between his windows and linux partitions) we get the unstable connection error. To fix it he closes his game syncs his time and when he reenters the game it works fine. I thought I'd share this in case it helps anyone else.

[warped venture]

I'm trying to play online with my friend but we keep getting message that our connection is unstable and we can't enter but I'm sure our connection is fine. I read somewhere you need to have the right timezone to fix this bug but I can't test it with my friend because she's offline at the moment. Anyone kind enough to help me test if the issue is fixed by joining my online game. I'll be greatful

[rich crown]

Ahh, thanks so much for sharing this! It’ll definitely help other players if they run into the same issue
Hopefully it doesn’t happen again 🤞 but if it does (or if anything else pops up), just give us a shout anytime!

[rich crown]

Hiyaa! If you’re looking for other players to help test, you can check out this channel here: https://discord.com/channels/623097219628662784/1405422233760825385
Let us know if you’re able to get in successfully (whether with your friend or someone from the thread), okay? That info would really help us! 🙌

[warped venture]

Hope it works or it will be sad because we were looking forward to play it together. Any other suggestions to fix this issue?

[rich crown]

Yeah, hopefully it would! Well have you tried switching to a different connection, like a mobile hotspot or LAN/Wi-Fi? 😮

[warped venture]

Just want to let you know that the unstable connection problem fixed after I set up my PC to the right time

[rich crown]

That's great news! Thanks for keeping us updated!

If you need anything else or run into any other issues, feel free to reach out anytime. We’re always happy to help! 😊

[near ferry]

Hello! So, me and my friend are having the same issue. We both synced our time and it's right, we also obviously tried to restart bot games and pc's, but it still says "'too unstable". Are there any other things we could'v try?🥲

[rich crown]

Hello! So sorry for the late reply 🙏

Is this still happening on your end? Also just to confirm: are both you and your friend playing on Steam on PC? We’ll help check this further with you! 😮

[near ferry]

hi again! yes and yes 🙁

[rich crown]

Do you always get the “connection too unstable” popup, or does it sometimes show a different message? And have you ever been able to play co-op before (even occasionally), or has it not worked at all from the beginning? 😮

[near ferry]

We were playing together for some time and coop was working fine, but now every time i try to connect to our farm it says "connection too unstable" (same thing every time). We even tried to just create a new farm (and i was the host this time), but this time my friend wasn't able to connect and saw this "too unstable" message