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Cannot Sign Into Lync - Problem Acquiring Personal Certificate

Posted on 2013-01-13
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Last Modified: 2013-01-24
We have been having an ongoing issue with Lync within Office 365.  The above error message is received upon logging into Lync.  

We have tried the fixes in this KB -> http://support.microsoft.com/kb/2604176 which work initially for a period of time, but then it would seem that the issue comes back time and time again.  We go through the same steps, fix the client up and at some time in the future it breaks again.  This is happening with all staff.

I need to get to the root of the issue.  Why is this happening repeatedly?
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Question by:apaton002
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justinoleary911 earned 2000 total points
ID: 38775005
we had this same issue and found that the only way this error went away is if we set the lync client to manual configuration instead of automatic. steps below

1.In the upper-right area of Lync 2010, click the Gear icon to open the Options page.
2.In the Lync - Options dialog box, click Personal.
3.Next to the sign-in address, click Advanced.
4.Make sure that Manual Configuration is selected and that the configuration values are exactly as follows:
¿Internal server name or IP address: sipdir.online.lync.com:443
¿External server name or IP address: sipdir.online.lync.com:443
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by:apaton002
ID: 38790186
We are working to test this on a number of PCs.  It's looking positive, but won't truly know until after the weekend.  

Would be good to understand why Automatic configuration isn't working.
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by:justinoleary911
ID: 38793399
the only way ive seen the automatic configuration work all the time is if your nameservers for the domain are set to microsofts which you can only do in a p plan.  otherwise the manual config always works best.  its an issue at the 365 datacenter and if history proves to be true microsoft wont fix it for a while.
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by:apaton002
ID: 38816674
The change appears to be providing some stability at this stage.  We still have to toggle the proxy configuration to get Lync to initially connect again.  The proxy seems to be blocking some vital piece of info from allowing Lync to initially communicate but once that initial "no proxy" connection is established and Lync is up and running, we toggle the proxy back on and it seems to stay working from then on in.  The proxy is a McAfee SaaS filter which is a provided service is difficult to get a straight answer on how to address this.
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by:justinoleary911
ID: 38816816
ok so it seems to be working then, do you have any additional questions on this matter?
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