Can't Change Default Apps Windows 11 (OS Build 22000.120)

Bless You! I also installed IrFanView on Windows 11 and it caused all kinds of problems with the extensions and was about to go back to Windows 10. Lesson learned to do not try to use IrFanView to change any associations

Thanks!.

I tried this, but received the following error when I run it in PowerShell:

"Get-AppxPackage : Access is denied.

Access is denied.

At line:1 char:1

• Get-AppxPackage Microsoft.Windows.Photos -AllUsers | Reset-AppxPackag ...

• 
      + CategoryInfo          : NotSpecified: (:) [Get-AppxPackage], UnauthorizedAccessException 
  
      + FullyQualifiedErrorId : System.UnauthorizedAccessException,Microsoft.Windows.Appx.PackageManager.Commands.GetApp 
  
     xPackageCommand"
  

I also used this nirsoft Software, called out by Morphy81 earlier.

I could not find my ".tif" extension in the Apps>Default Apps (for whatever reason).

Luckily, this nirsoft FileTypesMan still registered ".tif" https://www.nirsoft.net/utils/file_types_manager.html Editing all the properties of the ".tif" according to any other image file extension ("e.g. .tiff") in the nirsoft FileTypesMan

worked. After a restart, the .tif extension was found again in the Apps>Default Apps. I can now just edit it the "normal way" -great.

Unfortunately, I found a worrying post on the Nirsoft software (https://www.borncity.com/blog/2020/04/14/die-nirsoft-tools-und-die-dll-hijacking-schwachstellen/). I don't intend to diminish the work by Nirsoft, since it worked as a charm for me, but:

using third party software to solve a problem related with something essential as file-extensions in Windows - that was not solved by the Windows support team! - is always some sort of security issue, that I really hope to avoid.

Thanks!

hi everyone, i have the same exact issue except the relevant file type is ".json". I can't set a default app to open json files.

The solution here looks specific to image files. Can anyone help me?