I have installed Lync for a small business running Exchange 2010 and Office 2007. They are a 1 sip domain and the server seems to be funcitoning correctly. I added 5 users to start with as a test to the Lync server and of those 5, 3 show up as presence unknown.
And some users show online to one person, but will show presence unknown to someone else. There seems to be no rhyme of reason. I have added and deleted other users outside of the original 5 and they all show as presence unknown. To date I have made sure that
the Lync server is patched to the hilt, and that the client instances of Lync are also fully patched. I have set the SIP compression mode to disabled in the GPO. I am kind of at a stand still. I don't know what else to look for. Any help is greatly appreciated.
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