dsregcmd /status shows Client ErrorCode : 0x801c03f2 with Server ErrorCode : DirectoryError,
Https Status : 400, and a server message along the lines of The device object by the given id
isn't found. Every connectivity test above it passes. In a hybrid sync-join this is expected:
the device wrote its registration request, but Microsoft Entra Connect has not yet synchronised the
computer object from Active Directory into Entra ID, so there is nothing for the request to bind to.
Once the sync job completes, the device registers on its own.
0x801C03F2
The device object by the given id isn't found
What it means
Common causes
Normal sync-join timing — Microsoft Entra Connect has not yet synchronised the computer object. Registration succeeds after the next sync cycle.
The computer object is in an organizational unit that Entra Connect is not configured to synchronise.
The device object was deleted from Microsoft Entra ID after the device registered.
The device was moved between tenants or forests and is presenting an identity that no longer exists.
How to fix it
Confirm the diagnostics above it all pass. If they do, wait for the next Entra Connect sync cycle and re-check — this often needs no action at all.
Force a sync on the Entra Connect server:
Import-Module ADSyncthenStart-ADSyncSyncCycle -PolicyType Delta.Check that the OU holding the computer object is in the Entra Connect OU filtering scope. Devices in an excluded OU never appear in Entra ID and will fail here indefinitely.
Quote the Request Id from the dsregcmd output when opening a Microsoft support case — it correlates directly with the server-side logs.
Frequently asked
Do I need to do anything about 0x801c03f2?
Often not. In a hybrid sync-join it means the device is ahead of the sync cycle. If it persists past two or three sync cycles, check that the computer's OU is within the Entra Connect sync scope.