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![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(32, 81%, 13%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EMA%3C/text%3E%3C/svg%3E)
On 27-28 October 2026 My Microsoft Photos app stopped working properly. I uninstalled and was not able to reinstall the app again. Below is my system information.
Windows 11 Pro 23H2, build 22631.6199
Photos package: 2608.1401.18.0
Installation error: 0x80073CF6
Underlying error: 0x80004001 — Not implemented
Failing extension: windows.fileTypeAssociation.progIdGeneration
Photos worked until approximately 26–27 October 2026.
Store reset, DISM/SFC, removal, restart and WinGet installation
have not resolved it. Other Store apps update successfully.
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(217.60000000000002, 92%, 31%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EDT%3C/text%3E%3C/svg%3E)
Have a look at - https://github.com/microsoft/WindowsAppSDK/releases/tag/v2.6.5
Microsoft released Windows App Runtime 2.6.5 to address application registration failures involving E_NOTIMPL (0x80004001), matching the error experienced.
Install - https://aka.ms/windowsappsdk/2.6/2.6.5/windowsappruntimeinstall-x64.exe as admin
Run as admin
Add-AppxPackage -RegisterByFamilyName -MainPackage 'Microsoft.Windows.Photos_8wekyb3d8bbwe' -ErrorAction Stop
Reboot and see if that works
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Hello,
The latest update installed on my computer was showing as Microsoft Windows 11 23H2. I downloaded the newly released Microsoft Windows 11 26H2 version from Microsoft's official website and completed the necessary updates.
The issue has now been resolved.
For your information.