@julien deroche , Thanks for posting in Q&A. From your description, I know you have an account with custom role. When you login to Intune portal, a notification is prompted that you didn't activate the MDM authority. If there is any misunderstanding, feel free to let us know.
Based on my test, when I assign a user with the role “Help Desk Operator”, I find the user can manage device without issue. And there’s no error with MDM authority.
For your issue, please collect the following information to check:
- Please confirm if the help role assigned is “Help Desk Operator”,
- Please wait some time to see if the error will go away. If not, go to check the account’s permission under Home > Tenant admin|Roles > Endpoint Manager roles> My permissions to see if the permission has been all applied.
Please check the above information and if there’s any update, feel free to let us know.
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