Some users have been deleting the entire IrisService in the registry, it appears to also be related to the systray icons on the taskbar.
The first link is a couple years old but the second one is from a couple months ago. Apparently triggered now by the latest update kb5094126, so there may be some questionable new changes going on in this particular monkey-business department:
Some users have been deleting the entire IrisService in the registry, it appears to also be related to the systray icons on the taskbar.
The first link is a couple years old but the second one is from a couple months ago. Apparently triggered now by the latest update kb5094126, so there may be some questionable new changes going on in this particular monkey-business department:
https://gist.github.com/JMMBA/d56923502a74b6b7196dd800fad0a8...
https://thegeekpage.com/taskbar-missing-after-sign-in-6-fixe...
"Fix 3" is the one where the IrisService reg key is nuked.