Referenced KB should be a fix for "Vulnerability in Windows User Profile Service Could Allow Elevation of Privilege (3021674)". Instead it causes an event 1542.
Win 7 Home Premium
This has been a workhorse system with a number of Permission modifications.
Tried creating a new User Profile, but could not replicate original user operation. Not all applications transferred to new user. Desktop layout was not identical to old user profile. Not really happy about recreating years of work. Afraid that Backup in one user and Restore to another will only transfer the problem.
Main focus should be why patch causes an event.