Recently, many friends encountered "unable to update to windows8.1" when upgrading from Win8 to Wind8.1; the error message caused the upgrade to fail. If you also encounter this situation, then take a look at the following troubleshooting methods.
Sorry, we were unable to update to Windows 8.1. We have restored this computer to the previous version of Windows 0xc1900101-0x40017”
Error message: "Cannot update to Win8.1 Possible cause:
1. Antivirus software (recommended to close or uninstall first) < Br>
2. Drivers with problems
3. Some external devices that are not compatible with wind8.1
Solution:
1. Please confirm first Does your model support upgrading to Win8.1
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 personal files and use the one-click recovery function to restore the computer to the factory state. Please refer to the operation method.
4. Uninstall software and drivers that may affect updates, such as anti-virus software, power management, graphics drivers, and more.
5. Install all Windows update update patches before attempting to update Win8.1 in the app store.
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