Office Communicator Certificate Error

Posted on 2013-06-25
Last Modified: 2013-07-18
I have 1 user that is all of a sudden getting an error when logging into Office Communicator 2007 "There was a problem in verifying the certificate please contact your systems administrator"   She states that nothing on her box changed or malfunctioned.  One day she was working with OCS just fine and the next this error appeared.  We have tried uninstalling and re-installing but get the same error.  I am not all that familiar with certificates so require assistance....

Thank you
Question by:Twhite0909
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Author Comment

ID: 39274914
LVL 80

Expert Comment

by:David Johnson, CD, MVP
ID: 39276879
The certificate may have expired.  You will have to go into the user store in certmgr.msc and look for expired certificates

Author Comment

ID: 39278099
There are a ton of expired certificates.  Which one is for Office Communicator?  How do I install a new one?  Where does the new one come from

"I am not all that familiar with certificates so require assistance...."
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LVL 80

Expert Comment

by:David Johnson, CD, MVP
ID: 39278278
Any that are expired you can delete. Look for the Key Usage Property.

Author Comment

ID: 39278958
There is not a Key Usage property.  This is on a Windows 7 box.  I see

Issued to
Issued by
Expiration date
Intended Purposes

However intended Purposes is VERY VERY vague and does not out right say "Office Communicator"  So what am I looking for here?
LVL 80

Accepted Solution

David Johnson, CD, MVP earned 500 total points
ID: 39279004
Is this the only user that is getting the error? or is it everyone that uses that office communicator server?
If it is the office communicator 2007 server

Author Comment

ID: 39281340
It is only happening to one user and yes it is Office communicator 2007.  Why would this happen to only one user?

Author Comment

ID: 39281407
OK so like I said IM a dummy when it comes to certs.  THsi is a good link but when it says the cert info and use ISS I have no idea what its talking about.  What on that HTTP link do I replace to get my IIS site and get a cert?  

Use the CA Web Site
 to get the certificates was to use the IIS site,

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