Want your own digital license to the latest Windows 10 version? Follow these instructions. For help decoding setup errors, see 'Windows 10: Use setup log files to troubleshoot installation problems'. For details on how to troubleshoot these errors, see 'This free Windows 10 upgrade offer still works. Over the years, a small number of readers have reported that the upgrade fails because of a setup error or a compatibility block.
Also: How to downgrade from Windows 11 to Windows 10 (there's a catch)
