GroupChat Server is not syncing in changes to Chat Room membership, via Distribution List
This issue could happen, if the changes to the Distribution list are not completely synced in from the DC. In certain scenarios, we have a number of ports on the GroupChat Server in TIME_WAIT state when talking to the GC.
The following log entry in ChannelServer log, may be used to determine such a state:
276799 Microsoft.Rtc.Chat.MgcCommon.Exceptions.MgcActiveDirectoryException: Error accessing active directory. ---> System.Runtime.InteropServices.COMException (0x8007203A): The server is not operational.
Multiple instances of:
262061 DEBUG |20100917-14:04:53.126| 14: |ActiveDirectoryConne.ConnectToAD | connecting to AD host <… >
Considering lowering the value of TcpTimedWaitDelay. The default is fairly high.!---->
Consider increasing the number of available ports.
After making the above changes (which do require a reboot) monitor the ChannelServer logs for instances of the traces mentioned in the Cause Section.