Hi everyone,
A week ago Thursday, over the lunch hour I suddenly became unable to log into our on-campus Lync server via Pidgin. Over the next few days, we discovered that the problem wasn't just with my account, but suddenly started affecting a number of people randomly,
and in different ways.
From what we've observed so far, everyone can log in internally from the Lync client. Many people can log in from off-campus from the Lync client, but not everyone. For those who can't log in remotely, they also can't log in via Pidgin or the Lync Mobile
client (from on- or off-campus.)
Whenever someone encounters this problem, a SIP trace results in the error:
ms-diagnostics: 1000;reason="Final handshake failed";HRESULT="0xC3E93EC3(SIP_E_AUTH_UNAUTHORIZED)";source="MULYNC.at.millikin.edu"
and the Lync FE server's event log reports an EventID 4625, 0xc000006d error, with no sub-status.
The issue isn't machine- or device-specific because my coworker can log into Lync on my machine (under my Windows and Linux profiles) without a problem.
We've spent the last three days Googling and Binging the daylights out of the web, but haven't found a solution. The Lync server reports full replication, and I've manually kicked off a replication just to be safe, but it didn't make any difference. The
issue isn't a new- versus old-user problem either, because some new users have no problems, and some old users have no problems, but the inverse is also true. I even totally de-provisioned my account (the first one that was created on the Lync server when
we first built it) and re-provisioned it, but it didn't make any difference.
I also ran through the Microsoft Test Connectivity website (https://testconnectivity.microsoft.com/) and it reported no problems.
Our network and security admins have reported no changes since before the problems started, so it doesn't seem like it's related to that.
Is there any direction that you could point us on how to resolve this, or at least try to figure out where to look from here?
Thanks much!
Chris