8018000a: the device is already enrolled
Enrollment fails because a different user has already enrolled the device in Intune or joined it to Microsoft Entra ID.
From Microsoft's documentation, checked 9 Nov 2026.
Something went wrong. The device is already enrolled. You can contact your system administrator with the error code 8018000a.Also searched as: 0x8018000a
What it means
Another user's work or school account is already connected to the device. Settings > Accounts > Work Access shows a message like 'Another user on the system is already connected to a work or school'. That connection has to be removed before a different user can enroll or join the device.
Common causes
- A different user has already enrolled the device in Intune or joined it to Microsoft Entra ID.
How to fix it
Check the device's join state
Run dsregcmd /status as a domain user and read AzureAdJoined, EnterpriseJoined and DomainJoined.
dsregcmd /status
Remove the other work or school account
Sign out, sign in with the account that enrolled or joined the device, go to Settings > Accounts > Work Access and remove the work or school account.
Enroll with the right account
Sign out, sign in with your own account, then enroll the device in Intune or join it to Microsoft Entra ID.
How to confirm it's fixed
- The device shows under the intended user in the Intune admin center.
Follow Microsoft Intune failures and fixes
A short email about twice a week with new runbooks, configuration traps and fixes from KBY Technologies.