If Windows 10 updates are failing to install on your PC, you can disable Fast Startup and try again.
“There are plans to address this in a future Windows version,” the company said. In an update to the support document over the weekend, Microsoft quietly revealed that it will release a new version of Windows 10 to address issues with Fast Startup. Full shutdown only occurs when you restart a computer or when other event causes the computer to process a full shutdown,” Microsoft said.
As a result, these update installations will not complete. “Without a full shutdown, those pending operations won’t be processed.