Hi @Sidi_244 ,
After my testing, none of the Filter properties in the Graph API are currently working, and other users are currently reporting this as well. It's possible that there have been recent changes or updates to the Microsoft Graph API that affect how filtering works. Microsoft has not yet released updated documentation for this change. If you think this matter does not affect you much, my suggestion is that you can wait for a few days. If you do mind and want a quick fix, I suggest you create a new service request in the Azure admin center as an administrator and a more professional person will help you.
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