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#1
Deleting Windows.old
I know that's it not important, or necessary, to remove (delete) the Windows.old folder after an update, but it's superfluous to requirement (unless reverting back at some stage).
As I have a standalone build 9879, I decided to remove Windows.old. Ownership & permissions had to be changed for all locations which was not that easily accomplished but managed after a while but what was a problem was deleting file names that exceeded that maximum length, presumably 260 characters.
It begs the question: how can the file name be created in the first instance by the very same operating system that prevents it's removal?
After trying numerous suggestions, I stumbled across Robocopy:
mkdir empty_dir
robocopy empty_dir the_dir_to_delete /s /mir
rmdir empty_dir
rmdir the_dir_to_delete