file extention app

[white wigeon]

I opened a .json file with notepad
Now all json file including system ones open with notepad
1 will keeping it this way affect my pc system
2 how to make the default app nothing at all

They also show notepad icon

[unborn fog]

1 will keeping it this way affect my pc system

nope, won't have any negative affect on your pc, it won't break anything etc

2 how to make the default app nothing at all

you can manage default applications by file type Settings > Apps > Default Apps > Choose Default applications by file type

however that doesn't allow you to remove them - that'll likely require a registry change

[white wigeon]

I went there i can't remove only replace
What registery is "safe" to edit for this

I saw the brain surgery message

I honestly don't care what file opens it i only care about question 1
Shall i ignore it

[unborn fog]

What registery is "safe" to edit for this
there is only one registry, your computers and if you have any windows edition above windows home you should have access to Registry Editor, a tool for modifying it

if you have windows home you might be able to use a third-party tool to modify it but i have no experience with that and can't recommend anything

[unborn fog]

if it doesn't bother you, i would ignore it personally yeah

[white wigeon]

Yes i know about registery what safe one i meant by key

Alright ill ignore it

I honestly had a chain of issue
1 downloaded free download manager #1053794161712701590
Heard its a virus so i delete ALL its component
Even from app data temp program files for safety
2 i found a json file about it in window Microsoft edge folder idk why so i open it and all files about json turned into notepad #1054161112930713610
3 i uninstalled it for safety #1054161531153158216 therefore this question