Remove Oauth Delegated Application Permissions in Azure AD via PowerShell
If you have ever asked on how to remove grant permissions in Azure AD, this is how to do it in PowerShell.
Make Service Principal visible as Enterprise App in the Azure Portal
I recently came across an issue at a customer when implementing SSO using Azure AD with a 3rd party application (in this case on-premises Dynamics NAV), having a Service Principal, but no corresponding application listed in the Azure portal.