

This issue can be caused by any third-party antivirus tool, so be sure to uninstall it and try to upgrade it again.Īlso, it may be because your system doesn't have two security settings turned on, Secure Boot and TPM 2.0. To fix the issue, it’s advised to uninstall your antivirus completely and try to install the update again. If you’re getting the 0xC1900101 error, the problem might be your antivirus software.

What is your version of Windows 10, you can try to upgrade to the latest version and then update Windows 11. Have you checked that the PC meets the minimum system requirements?
