Failure when no Primary User is set

[JerichoJones]

No Intune Primary User Id set for Intune Managed Device
Response content:
{"error":{"code":"BadRequest","message":"{\r\n "_version": 3,\r\n "Message": "User id must be in the form of Guid, User id =

The GUID appears to be many guids concatenated together separated by %20

ERROR: Set-IntuneDevicePrimaryUser : Request to https://graph.microsoft.com/beta/deviceManagement/managedDevices('GUID')/users/$ref
ERROR: failed with HTTP Status BadRequest Bad Request

[JerichoJones]

I think this is happening because we have some devices where the LastLoggedOn field is empty in Intune.

[wisper1977]

I am having the same issue, would there be a way to tell it to set a specific user in this instance?