Forum Discussion
Aug 12, 2019
ATP connectivity challenge HTTP Error 400
Hi, I am trying to onboard an ATP client on Windows 10 using SCCM.
SCCM states the policy was applied correctly. The ATP service is running, the sense logs only contains warning and error messa...
Support was looking at creating an offboarding script based on data found in the registry. There wasn't an easy way to create that ourselves. I managed to find my tenant back and eventhough it had long expired I could still log into it and download an offboarding script. If you still know what mailbox the poc was requested in you might find the mail with your login. It should contain this string Analyst@Windows.
Good luck
Mark Aldridge
Oct 17, 2019Brass Contributor
For anyone else having a similar problem you can use the MDATPClientAnalyzer tool at
It finds the issue I was having and that I need to off-board my device from my previous Azure Tenant.