On a computer that is running Windows Vista, Windows 7, Windows Server 2008 or Windows Server 2008 R2, all the TCP/IP ports that are in a TIME_WAIT status are not closed after 497 days from system startup. Therefore, TCP/IP ports may be exhausted, and new TCP/IP sessions may not be created.
Note: Some network-related operations to this computer may be affected by this issue. For example, you try to use some remote administration tools to manage a Windows Server 2008-based domain controller that has been running for more than 497 days. In this example, the remote administration tools cannot connect to the domain controller.