I've done the rebuild identity, step-by-step, approximately 12 times.  Sometimes the fix works for over a week, sometimes for less than 24 hours.  Each time the fix takes many hours (usually overnight) to complete. 

I did the 12.2.1 update weeks ago, after the 3rd or 4th identity rebuild.  That didn't stop the problem. 

Please, someone, help!  My employer wants to re-image the entire computer.

JL