Hello @Megens, B.(Medewerker Helpdesk ICT),
Thank you very much for the detailed information you shared and for the time and effort you’ve put into troubleshooting this issue. I really appreciate how thoroughly you documented the behavior and the steps you’ve already taken, as it helps me understand the situation much more clearly.
At this time, I have not identified any officially reported incident or advisory related to this behavior in the Microsoft Service Health dashboard. Based on the symptoms and the scope you described, this issue would require deeper investigation at the backend service level.
To proceed further, I recommend raising a support ticket through the Microsoft 365 Admin Center. This will allow a support agent to access specialized diagnostic tools and review tenant-level information, which is necessary to analyze backend dependencies and request flows in more detail. Unfortunately, from my current position, I don’t have access to those tools or visibility into your tenant, so I'm limited in how far I can investigate this directly.
Please follow the detailed steps below to reach out to Support agent:
- Sign into the Microsoft Admin Center
- After clicking on "Help & Support" button like this image, you can type "I need agent support via phone or email". After that, you can click on "Contact support"
- Choose contact method: "Phone"
- Fill all the information in this contact support details, please describe your situation carefully so they will have enough information to help you.
- Finally, clicking on "Contact me"




After completing them, you will receive an email appointment for a meeting to review this issue professionally together.
Creating a ticket via the Admin Center will ensure the case is handled by the appropriate team with the right level of access to continue the investigation effectively.
Thank you again for your cooperation and for the effort you’ve already invested. Please let me know if you need any guidance on creating the support request.
Kind regards,
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