Error 0xC1900101, We couldn’t install or update Windows

When it comes to installing or Updating Windows 11/10, there are tons of issues you could face. Most of the time there is an error message that the system shows to help you figure out the problem. This post will help you if when you try to update, upgrade or install Windows, the installation or update fails with an error message: Couldn’t update to Windows, Sorry we couldn’t complete the update to Windows. We’ve restored your previous version of Windows to this PC.