Try this registry file. It adds Firefox (Private) to Default Apps.
Can't Change Default Apps Windows 11 (OS Build 22000.120)
The new Default App Setting is way to advance and confusing which is unecessary complex for home users. I wanted to change the default file type for Photos and Videos but I there is no jpg, png, mp4 types of file type showing when searching to change it's default app. Also I can't change the default app using explorer open with because the checkbox for always use this app is missing for both Photos and Videos. Also there is no Open with the file property too. Help Me Anyone.
*Moved from Windows 11
Windows for home | Windows 11 | Accounts, profiles, and login
Locked Question. This question was migrated from the Microsoft Support Community. You can vote on whether it's helpful, but you can't add comments or replies or follow the question.
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Anonymous
2023-03-16T14:06:56+00:00 DOES NOT WORK. Using default programs / apps does not open anything, can't change anything. ALL programs are set to Windows Explorer and it opens nothing.
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Anonymous
2023-02-18T23:44:38+00:00 I just (about 4 days ago) did a Windows reinstall from the web. I found I could not change the default pic view from Microsoft Photo to irfanview V4.62 64bit. After attempting the fixes found here, I found the "repair" and "reset" buttons in the SETTINGS / APPS / DEFAULT APPS / PHOTOS section. I first did the repair, then the reset. Next I went to the image files I wanted to associate with irfanview V4.62 64bit clicked on those images (ie... jpg) and was able to see the "set as default" button on the bottom right of the window. Now my associations are back to where I want them.
Thank you "EVERYONE" for your posts.
Happy, Happy. Happy.
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Anonymous
2023-02-17T20:42:36+00:00 Thank you for not just assuming this user broke his PC. I just unboxed a brand new laptop and all images were locked to MS Photos. Your command line unlocked them and I'm able to associate them with the app of MY choice now, instead of the app of Microsoft's choice. Thank you for posting this comment.
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Anonymous
2023-01-31T16:16:56+00:00 .jpg was completely missing as a file type. Running that script brought it back. Thank you.