Office Communicator user cannot set presence to online or cannot shown as online.
Resolution:-
Above issue is only seen on Windows 2000 Sp4 and Windows XP professional machines.
Here is the resolution-
1. Internet Explorer is at the wrong version or older version. You must have the most recent IE on the machine. IE 5 or 5.5 will not work.
2. Inetcomm.dll is not properly registered.
Use command regsvr32 inetcomm.dll to get registered, and then login on communicator and test.
3. May issue with MSXML2.
Use command to deregister MSXML2.DLL and MSXML3.DLL, and then register MSXML3.DLL.
As per my experience, first and second fixed the majority of the other failures.
Thank you!
If you have any queries/questions regarding the above mentioned information then please let me know.