There have been reported issues with users who user Intel rapid storage drivers, causing issues with windows update, mostly on x64 machines. If you are using them, try updating the driver is Device Manager, or alternatively, temporarily uninstalling
the drivers, update windows, then reinstall the intel driver.
Thanks so much for this tip Sheldon.
I bought this PC in 2012 and only used it for exams so I never wanted to update to avoid breaking things.
Now I'm using it more often and was really frustrated by the lack of Windows Updates.
Lenovo doesn't update their drivers page either, it says 2014 on the Intel RST driver but the driver on Lenovo's Thinkpad site is 2+ years old.
I had to go to the Intel site to get the latest driver.