I am trying to install Azure AD Connect in my server2012 R2 Server. I have followed the Custom installation option provided with the installer. I have followed the document from Microsoft docs. Microsoft doc AAD custom install
But I am getting error as An erroroccured executing Configure AD Sync task:user_realm_discovery_failed: User realm discovery failed. No specific information for this failure is available.
I have tried Express settings too , but again same error is occurring. Expect help to resolve this error . Thanks