Starting ASP.NET state service result in error message.

One of my customers didn’t succeed to start the ASP.NET state service. Every time he tries to start the service an error message pops up. Well that service occupied a port to supply it services and the problem was that other process on the computer already uses that port. You can check the current port number and change it in the following registry entry:

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\aspnet_state\Parameters\Port