My application used Microsoft Graph for Authentication. The workflow here.
(1)Access to application -> (2)Redirect to Microsoft Login -> [Login success] -> (2)Redirect to my application with code parameter.
Step (1) and (2) It's working when my IT add 3 URLs to whitelist for Azure Server:
But in step (3), I cannot received parameter from https://login.microsoftonline.com/ , It's appear "Connection refused for URI https://login.microsoftonline.com/telnatid//oauth2/v2.0/token"
Could you please advise me for any configuration in Azure?