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#21
After upgrading. It is always bettter to run Disk Cleanup in extended mode and it'll show a lot more options and prompt you to delete all the remmants.
Open Admin Command Prompt and run:
%SystemRoot%\System32\Cmd.exe /c Cleanmgr /sageset:65535 & Cleanmgr /sagerun:65535
Example of Disk Cleanup Extended mode, 25 options. Check them all except Windows Setup Log File: