This also worked for me on a Win10 Enterprise Dell E6540 laptop - but to clarify:
the instructions you referenced say to rename C:\Windows\System32\wbem\repository\ and not C:\Windows\System32\wbem\
I renamed \repository\ and it worked. Thanks for your post! I lost a box 16 hours before an exhibit was to open, due to this error - which for me was caused by the accidental Win10 update(s) KB5004331 or 5011543 or ServicingStack 10.0.19041.1704 (they all updated together and won’t uninstall).