Activity history keeps posting to Microsoft account...

Nope. My other computers have been off all week, and the activity logs correspond to the laptop. I disabled full diagnostic data. I also followed a couple of your guides to change my group policy (Enable or Disable Collect Activity History in Windows 10 | Tutorials Enable or Disable Sync Activities from PC to Cloud in Windows 10 | Tutorials). There seems to be some delay between the activity and when it goes up. Thursday, the logs went through Tuesday. This afternoon (Saturday) the logs went up through Thursday. I am betting tomorrow morning (if my changes don't make a difference), there will be logs from Friday (I actually don't remember if I did anything with my laptop Friday).

Brink said:

It will be interesting to hear if your activity history is still being collected after the date of it being disabled.

I had disabled it the day I setup the laptop a couple weeks ago. The laptop uses some Microsoft Azure AI stuff that I recently uninstalled. Maybe that was doing something? Maybe the diagnostic settings?

So far nothing in the Microsoft privacy section. I will keep monitoring.

Still nothing on the MS privacy website. I double checked, I did use the laptop on Friday night (I didn't initially remember if it was before or after midnight, it was before).

Hopefully in the morning and going forward it stays empty.