Unable to update to Windows 8.1, "0xc1900101

When upgrading from Windows 8 to Windows 8.1, the following prompt may appear: Unable to update to Windows 8.1

Sorry, we are unable to update to Windows 8.1. We have already This computer is restored to the previous version of Windows.

0xc1900101-0x40017

can be caused by the following reasons:

1. Antivirus software

2. Drivers for problems

3. Some external devices that are not compatible with Windows 8.1

Solution:

1. First, please confirm whether your model supports upgrade to Windows 8.1

2. It is recommended that you temporarily remove all non-Lenovo pre-installed external devices such as mouse, keyboard, printer, camera, etc.

3. It is recommended that you back up important individuals. File, use the one-key recovery function to restore the computer to the factory state, please refer to:

3. Uninstall software and drivers that may affect the update, such as anti-virus software, power management, graphics driver, etc. Br>

4. Install all Windows update update patches before attempting to update Windows 8.1 in the store.