Error code 0x800f0991 is an issue that can occur when attempting to update Windows 11.
The best solution that worked on Microsoft forums is to do an in-place upgrade.
Doing anin-place upgradewill not delete your apps or installed applications.
you might also keep your personal files and tweaks.
Before that you could try 2 things that can address the error 0x800f0991.
In this blog post, well explore five alternate methods to resolveerror code 0x800f0991inWindows 11.
If the issue persists, consider reaching out to Microsoft support or a professional technician for further assistance.
