This article provides you steps to fix Error Code 0xc1900101 when you are trying to install Windows 11 on your Asus computer.
To fix this error make a right click on the Start Menu, click on Device Manager, in device manager expand System devices, here you will find the driver named as ASUS System Control Interface v3, make a right click on it and click on Uninstall device.
Now After uninstall you must prevent Windows Update from automatically reinstalling the above driver, or else you will get the 0xc1900101 code again. Be quick enough to stop the automatic reinstall so make a right click on the start menu and click on System, under Related Settings, click on Advanced system settings, go to Hardware tab, click on Device installation settings, now select No for automatic download of drivers. You can do this before you uninstall Asus System Control Interface v3 driver or right after the uninstallation. Now try updating to Windows 11.
If you have MyASUS app/ScreenXpert software then uninstall these apps and reinstall these softwares after you upgrade to Windows 11.
For many users disconnecting the internet during Windows 11 installation has worked so after uninstalling Asus apps & drivers disconnect the internet and try installing Windows 11.