I never got the WUMT script working. It would run when manually started, but the Task Scheduler tasks would never run. I could not modify the WUMT tasks. So, when I experienced the same results with WUMgr (whose Windows Defender Update task I could modify) and found a solution (see my post #1093 above) I thought it might shed some light on the issue I was having with the WUMT script. From here forward I'm guessing, but, the way I got the WUMgr Defender Update task working was by modifying the task to change the initial trigger from some finite time to login and it started working immediately. So, my thought was that possibly the initial trigger that WUMT creates in it scripts could also be modified to eliminate the "time" based trigger and change it to a login trigger. Don't know how much I've cleared things up. This is not my field of expertise. I just stumbled on a solution that works for me and thought it could be helpful.