An exception occurred starting remote services for Backup Exec Management Service:
System.ServiceModel.AddressInUseException: There is already a listener on IP endpoint (::):50104. Make sure that you are not trying to use this endpoint multiple times in your application and that there are no other applications listening on this endpoint.
Or
System.ServiceModel.AddressInUseException: There is already a listener on IP endpoint (::):50106. Make sure that you are not trying to use this endpoint multiple times in your application and that there are no other applications listening on this endpoint.
This can occur if another application is using or blocking the use of port 50104 or 50106, which is needed by the Backup Exec Management Service.
Ensure that ports 50104 and 50106 are available for use before starting the Backup Exec services.
To see if another application is using a specific port, the following command "netstat -anbo" can be used.
If TCP port 50104 or 50106 is used by another application as dynamic ports, the following commands can be used to exclude these ports from dynamic port range for TCP/IP. Note that the service or the application which is using the port may need to be restarted before starting the Backup Exec services.
Fore details, please refer to the URL below.
https://support.microsoft.com/en-us/kb/929851
NOTE1
The following commands are also available to exclude specific ports from dynamic port range on Windows 2008 and later versions. However, this workaround does not work for port 50106 in Backup Exec 2014 and Backup Exec 15. Note that port 50106 is not used by the Backup Exec Management Service in Backup Exec 16 and later versions.