I am using Windows 10, 64-bit, Version 1803, Build 17134.320.
When I try to set a new "Default App" for a certain file type or protocol (eg: .txt files) to be opened in, Windows does not save the setting and keeps resetting it to the system default.
I have tried multiple ways of applying the new settings:
- Right click the file -> Properties -> Opens With -> Change
- Right click the file -> Open With -> Choose another app -> Always use this app to open .txt files
- PC Settings -> Apps -> Default Apps -> Choose default apps by file type/protocol
None are able to apply a new default app to a filetype.
When I try to change the association using option 3, the "SystemSettings.exe" application hangs for 5 seconds and then simply resets the options back to the system default.
I even contacted the Microsoft support and had two supporters remotely connected in order to fix the issue. Even they had no clue what causes it.