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LCS2005 Fresh Install Problem

Posted on 2007-03-18
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Last Modified: 2013-11-29
I have installed Microsoft Live Communications Server 2005 on my network. I cannot get any clients (Office Communicator or Windows Messenger 5.1) to connect to the LCS Server. All of the services are running and everything seems to be ok from the server end. I've checked a couple of the diag tools and the server seems to be responding ok. I do get this message when using LCSDiag.exe with the test client:

Response 504
504 Server time-out
The signing failed. There is a connectivity problem on one server
Please go to server servername.domain.local and run LC Diagnostics
to check server connectivity to all server from WMI
if the test passed go to the next server in the chain and run the test again.

I am using TCP, not TLS. I know TLS is more secure but for simplicity, let's make TCP work.

Anyone have any ideas? Everything seemed to be OK during the install, but I cannot connect at all. Thanks!
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Question by:cardscomp
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by:inbarasan
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Check on which IP, the LCS TCP port(5060 i believe) is listening. Which ever IP it is listening you should make sure client is connecting to that IP.
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by:cardscomp
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Yes the server does respond. I've used the LCSPing.exe utility to communicate with the server and it responds on 5060. I have no internal firewalls or anything that i would think would be impeding communications on my LAN. thanks,
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mohdabsar earned 250 total points
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I have had faced same issue the LCS 2005 installation was fine....still client were unable to connect...
The issue in my env. was client were trying to connect to sip service through e-mail address and it was failing....
then I tried through username.FQDN (of domain) then it started working fine...

Change the SIP address of users through AD to username.FQDN and try...
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by:cardscomp
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i accepted his solution as that fixed the problem .the FQDN was wrong in my SIP settings. thanks!
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