

Right-click on the partition you want to relieve of unnecessary data and open Properties.Here’s how to run the Disk Cleanup and clear all redundant files: However, some users suggested that cleaning these and other temporary files can resolve the Windows 10 update error 0x800f0900 error. Namely, Windows 10 stores installation for the previous version so you can, if something goes awry, roll back the system. You’ve probably have heard of (or even tried out) the rollback option available in the Recovery menu. Now restart your PC and try installing the update again and check if the error is resolved.Click on the Run the troubleshooter and let the troubleshooter detect the issues automatically and fix them.Now, you have to find Windows Update, Scroll down and you will see Windows Update option then click on it.
