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

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.

I got it!

There are three commands you have to run from PowerShell: (I only tried in admin mode)

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

Get-AppxPackage Microsoft.ZuneVideo -AllUsers | Reset-AppxPackage

Get-AppxPackage Microsoft.ZuneMusic -AllUsers | Reset-AppxPackage

First one (suggested earlier, thus the solution now :) ) only works for pictures.
The second command works for videos, and the third command works for audio files.
In case there are other issues... you have to check what default app Windows uses for that. Somehow find out the packagename for it, and replace it in the command (this is how I managed to make this work.)

No restart needed, after these commands, you can set the default apps for images, videos, and music files.

-Right click on file, Open With (other app), and select: always use this. OR:

-Right click on file, Properties, and modify there. OR:

-Settings menu, Default Apps, select the app. OR:

-Settings menu, Default Apps, enter the extension (like .mkv)

(remember, these only worked for meafterentering the commands above)

Hopefully I could help all, who are in need :)

Thanks, this seemed to work perfectly for most.

Yet, even after doing these commands in PowerShell:
the file extension ".TIF" is missing.

I cannot assign any app to a file format, that I cant find.

Can I add it manually?

Thanks!

Hi,

I had the same issue as you, and the following command fixed it for me.

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

Hope this helps!

This one worked for me... 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?