This issue mainly arises when one of the services, Mobile Device Management for Microsoft 365 or Microsoft Intune, is not enabled from the Azure AD Admin Center. However, this may not always be the case, as other factors such as corrupted cache files and account problems could also trigger this error. Stay with us until the end to resolve error code CAA50021. Before making any changes to your PC, ensure you are not connected to any VPN, as this could prevent logging into office applications. Additionally, consider restarting your system before proceeding with the solutions outlined below.
1. Link Your Device With Azure AD
If your device is not properly linked with Azure AD, follow these steps to check and ensure it is properly connected:
2. Allow Users to Register Their Devices with Azure AD
This step requires admin access. If you are not an admin, contact your admin to proceed. Users can usually register their devices with Azure AD if Mobile Device Management for Microsoft 365 or Microsoft Intune is enabled.
3. Re-register Your Device
If your device registration has expired, it needs to be re-registered. This action must be performed by an admin. If you are not an admin, please contact your admin.
4. Repair the Office App
Repairing the application files of your Office application can resolve issues caused by corrupted files.
5. Clear the Microsoft Teams Cache
6. Reinstall the Office App
If the issue persists, consider reinstalling the Office app. This removes corrupted files that might cause the error. If the error continues, it may be necessary to contact Microsoft Office Support for further assistance.
