Forum Discussion
MoNotificationUx.exe keeps waking PC
Only #1 of my 2 identical PC's keeps waking on it's own, below is the culprit. Also, if you put it to sleep while the notification is there, it wakes right back up. In GPEdit I have Automatic Upda...
MarissaPinkham I have the same problem. Updates are also configured to notify through GP, and clicking update notifications also does nothing.
The PC won't stay asleep, and I don't want to disable wake timers because I use them daily.
Same problem for months (Windows 11). I've reported it via the Feedback Hub, but there's been no response. The only known workaround is to disable wake timers (or set them to Important Only), which is unacceptable because I need to use them for other things. So we get either usable sleep mode or usable wake timers, but not both.
The problem only shows up when there's a Security Intelligence Update waiting to be installed. But even though I install updates frequently, those come in so often that there's usually one pending overnight.
UPDATE 2: Unchecking "Allow scheduled maintenance to wake up my computer" also didn't work. What does seem to have worked, though, is to task-schedule powershell.exe to run (at admin level) the command "Update-MpSignature" every 15 minutes (without waking the PC if asleep), which will install any pending Security Intelligence updates. You can then verify that the Windows command "powercfg /waketimers" no longer lists a timer for MoNotificationUx.exe.
Creating a task that runs "C:\Program Files\Windows Defender\MpCmdRun.exe" -SignatureUpdate with highest privileges also seems to work on Windows 11 to get rid of the wake timer. I'm going to try having it run when I lock my computer and when the screen turns off (a program called Power Event Provider on github can create application logs for this). On Idle might work too. My thought is that if it runs after I'm done with my computer but before it goes to sleep then hopefully I won't have to run it on a schedule.
