Forum Discussion

ChangeOnlyFridays's avatar
ChangeOnlyFridays
Copper Contributor
Aug 22, 2023

Microsoft 365 Apps admin center devices are not checking in.

None of our devices have checked in since August 2nd. I see no obvious blocks in our FWs or AV systems.
microsoft 365 apps for enterprise
manoth_msft's avatar
manoth_msft
Icon for Microsoft rankMicrosoft
Aug 23, 2023
Two quick thinks to check on an affected device:

Is the TAK (token to connect) set: HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\cloud\office\16.0\Common\officesvcmanager > TenantAssociationKey

Check the value of HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Office\C2RSvcMgr > LastCheckInResult. Is it 200 (successful check-in) or a different value?