I'm not able to update my Application Registration in Azure Portal. I consistently get "Network error: There is an issue establishing a connection to the service" : Error screenshot
I am able to view my App Registrations, and create new App registrations. Only when I save them, the update fails.
The application registration experience: https://portal.azure.com/#blade/Microsoft_AAD_RegisteredApps/ApplicationsListBlade
I am the owner of these apps or the tenant administrator.
I noticed that all network requests to graph.windows.net with http verb PATCH fails. POST, GET, etc work. The same requests work when I'm not on my corporate network. What action can I take to determine the root cause and fix this?