Forum Discussion
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.
8 Replies
A few quick things I'd look into:
Diagnostic data settings. If your GPO or Intune policy sets Office diagnostic data to Off or Security instead of Optional/Required, the portal won't see those endpoints.
Network rules. Make sure your firewall or proxy isn't dropping traffic to *.config.office.net or *.officeconfig.msocdn.com. The onboarding fails silently if those endpoints are blocked.
Tenant group assignments. Double check under Cloud Update settings to see if your target device groups are properly assigned or if there's an active exclusion policy blocking those 27 machines.
Keep in mind that even after fixing telemetry or network access, it usually takes 24 to 48 hours for devices to report back to the portal once users launch an M365 app.
- manoth_msft
Microsoft
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?- I have checked a couple devices. None of them have a TenantAssociationKey. Some devices have LastCheckInResult as 500 and one has 401.
- manoth_msftAre you positive that the devices are meeting the requirements as listed here: https://learn.microsoft.com/en-us/deployoffice/admincenter/inventory#requirements-for-using-inventory as well as that users are signing in with an AzureAD account from your tenant and have launched the Microsoft 365 Apps at least once?
