- A user's Intune subscription was cancelled, and the Intune Admin Console can no longer be accessed.
- A different MDM provider was selected. The MDM authority for the tenant is still set to Intune, Office 365, or CM.
In this scenario, the user's devices still try to enroll in Intune.
Be aware that the MDM authority has no effect on another provider's MDM solution as long as devices are not redirected to Intune enrollment servers with old CNAMEs that may still be present. After the MDM authority is configured, it will remain that way unless a customer opts to change to another structure within the possible MDM configurations—for example, from Intune or Office 365 to ConfigMgr, or vice versa.
If these CNAMEs remain present, your devices will still try to enroll in Intune MDM servers, because the enrollment and registration requests are being redirected to the Microsoft servers instead of to your new provider by the old CNAMEs entries. To prevent this behavior while the CNAMEs are still set to Microsoft-based enrollment servers, you must override the enrollment server information in the device itself, assuming that option is available in the enrollment interface on the unit.
Note Make sure you verify that all of your domains have no CNAMEs pointing to either manage.microsoft.com or EnterpriseRegistration.windows.net.
ExampleAssume that you have an Office 365 tenant for contoso.onmicrosoft.com and have verified the contoso-1.com, contoso-2.com, contoso-3.net domains. In this situation, you must check all possible CNAMEs for these domains. To check CNAMEs, open a command prompt, and then enter the following:
enterpriseenrollment.<domain>.<com> canonical name = manage.microsoft.com
If a CNAME is set, the reply will resemble the following:
enterpriseenrollment.<domain>.<com> canonical name = EnterpriseRegistration.windows.net
Additionally, you can check any available online tool from several entities for a simplified webpage guided lookup procedure. This also lets you check different DNS hierarchy branches by using tool providers in different regions to make sure that all changes that were submitted at your domain registrar have percolated through the hierarchy. Remember that DNS changes may take as long as several days in some cases.
In the preceding example, you must check whether you have CNAMEs set for any of the following entries and if so, what they point to:
Artikelnummer: 3182596 – Letzte Überarbeitung: 03.08.2016 – Revision: 1