A clean install of Windows 10 21H2 minimizes the risks because it deletes everything on the hard drive and sets up a fresh copy of the OS. Typically, you should perform an in-place upgrade using Windows Update, but changing the current installation can lead to problems and errors due to possible compatibility issues and custom configurations. Windows 10 21H2, November 2021 Update, has been available for compatible devices since November 16, 2021, and the best way to upgrade is to perform a clean installation using a USB flash drive bootable media.
