This article lists the possible solutions to fix the error code 0xc1420121, We couldn’t install this feature update you may see on Windows 11 or Windows 10. One ...

I guess a mistake from Microsoft's part. However, searching for updates, it still gives me the "new" along with the error, again. Hence, if you seem to be facing installation issues with this update, ...

Windows 11 KB5086672 hotfix resolves the 0x80073712 installation error caused by the March 2026 non-security update.

Microsoft has temporarily stopped distributing its KB5079391 non-security feature update for Windows 11 after widespread reports of installation failures. Users attempting to install the late-March ...