While following this article, when I try and use Azure AD Graph Explorer to set the value of a custom attribute for a given user, the operation never completes (the top progress bar never reaches the end).
I am an Azure admin (and was able to successfully create the extension just before). I tried with two different users on AAD. Also, If I use a non-existing user OR an invalid extension I quickly get an error as expected, so I believe the settings are correct.
Anyone have any idea what I could be missing? Thanks.