Azure website message “You do not have permission to view this directory or page.”. What to do?

Question

After I published an ASP.NET Core app to Azure from Visual Studio 2017 I am getting this message when I click on the app url:

It was working fine before. Is

Answer 1

From my experience, if your login user ID under Azure Active Directory (AAD), you have to modify in Settings:

• Authentication / Authorization
• App Service Authentication, "ON" =>> choose: Log in With Azure Active Directory
• Select 'ActivityProvider', base on your purpose. In my case, I'm using AAD.
• Configured (Express: Existing APP)
• Manage Azure Active Directory: Manage Permission & Manage Application

For Manage Permission ==>> Add, In Delegate Permission, choose: Sign in and read user profile and refresh your browser to login again