Azure AD Join Issues - Unable to Register Device

Posted by JaneDoe on Sep 10, 2025 at 09:15 AM

I'm trying to join Windows 11 machines to Azure AD using the normal OOBE process, but I'm getting the error 0x8018002C after entering my credentials. The device never registers.

I've checked the network connectivity and the device is on the corporate VPN. Any ideas?

Posted by TechGuru on Sep 10, 2025 at 10:02 AM

Make sure the device is not already registered in Azure AD. You can run dsregcmd /status and look under Device State. If it shows DomainJoined: YES, you may need to reset the registration.

Posted by MikeS on Sep 10, 2025 at 11:45 AM

Also verify that the time on the device is synchronized with an NTP server. A time skew can cause token validation failures and lead to that error.