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FrancisScott-0855 asked TeemoTang-MSFT answered

Offboarding old defender for endpoint to apply new.

After a recent purchase of the full Microsoft sweet we are seeing errors on many of our test systems when attempting to onboard. One of the errors indicates the service is already running. The other errors indicate the service is denied as it is attempting to connect to an expired Organization ID. We have come to the conclusion that a trial version was used by a previous employee and it expired. I have also read that the offboarding file needs to be from the same tenant that onboarded the system. We do not have that access or knowledge.
Is there a way to offboard the old without the knowledge of the old tenant or a way to modify the registry key/keys to repair the agent and have it check into the new tenant?

windows-10-security
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Is the device part of the domain or company network?
Is this part of the domain you are managing or a different domain?
In case there is device which you are not the administrator, you may just format it and setup it again with the new tenant.

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It is a system on the domain and in use. There are actually several system that are falling in the category.

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TeemoTang-MSFT answered

Is there a way to offboard the old without the knowledge of the old tenant or a way to modify the registry key/keys to repair the agent and have it check into the new tenant?

No, from Windows side, the best way is clean install these test systems, then you could re-use them, no other effective ways.
Or you could find the expired employee and ask him for help.


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