If port 1501 is taken by another process at the time of AD FS 2.0 service start, you will find event ID
364 in the AD FS 2.0/Admin log in Event Log with the following description:
MSIS7004: An exception occurred while connecting to the federation service. The service endpoint URL 'net.tcp://localhost:1501/adfs/services/trusttcp/windows'
may be incorrect or the service is not running. ---> System.TimeoutException: The open operation did not complete within the allotted timeout of 00:01:00. The time allotted to this operation may have been a portion of a longer timeout. ---> System.TimeoutException:
The socket transfer timed out after 00:01:00. You have exceeded the timeout set on your binding. The time allotted to this operation may have been a portion of a longer timeout. ---> System.Net.Sockets.SocketException: A connection attempt failed because the
connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond.
Net.TCP Port Sharing
Is port 1501 used for any communication between ADFS Proxy and ADFS Federation servers?