Solved

Cannot sign into Lync with non domain windows 10 machine

Posted on 2016-08-30
3
141 Views
Last Modified: 2016-11-22
Hi all, I'm trying to sign into my corporate Lync server using my non-domain surface pro 3 running windows 10. I have a regular dell windows 7 machine on domain that can. When logging in I get the error" There was a problem verifying the certificate". Event viewer has an error:

"Lync could not connect securely to server myserver.mydomain.local because the certificate presented by the server was not trusted due to validation error 0x80090325.  The issuing certificate authority (CA) for the server's certificate may not be locally trusted by the client, the certificate may be revoked, or the certificate may have expired."

I have tried exporting all related certificates from the working windows 7 machine and importing them onto my surface with no luck. Any other ideas?
0
Comment
Question by:Michael
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
3 Comments
 
LVL 17

Accepted Solution

by:
Ivan earned 500 total points
ID: 41776168
Hi,

so it seams that your corporate Lync server is using certificate from internal CA?
Did you try to export root CA certificate from CA, and import into Trusted Root Certification Authority?
Do that manually, don't choose "automatically import into store" when you try importing, since sometimes it goes to wrong store.
If you have intermediate CA, import that cert into "Intermediate Cert.." store.

Confirme that those certs are in those stores.

Regards,
Ivan.
0
 
LVL 1

Expert Comment

by:it_medcomp
ID: 41776222
Are you the only one having the problem? I'd start there, because there are three possibilities mentioned: The CA is not trusted, the certificate may have been revoked, or the certificate may have expired. To really know without having to involve multiple people, you can visit testconnectivity.microsoft.com and run the connectivity test for SfB2015 or Lync 2013, depending on what is on your computer. The results will allow you to drill down and it will give detail about your certificate problem, then you can proceed from there. It's free and takes about 2 minutes.
0
 
LVL 1

Author Closing Comment

by:Michael
ID: 41779180
Guys thanks both. I solved it by taking a closer look at the certs. Although I was importing all the certs related to my company, I noticed most of the certs where issued by Entrust. On my domain machine I had a lot of certs for Entrust also which I didn't on my non domain machine. Importing those certs fixed the issue.

Thanks
0

Featured Post

Free NetCrunch network monitor licenses!

Only on Experts-Exchange: Sign-up for a free-trial and we'll send you your permanent license!

Here is what you get: 30 Nodes | Unlimited Sensors | No Time Restrictions | Absolutely FREE!

Act now. This offer ends July 14, 2017.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Always backup Domain, SYSVOL etc.using processes according to Microsoft Best Practices. This is meant as a disaster recovery process for small environments that did not implement backup processes and did not run a secondary domain controller that ne…
Group policies can be applied selectively to specific devices with the help of groups. Utilising this, it is possible to phase-in group policies, over a period of time, by randomly adding non-members user or computers at a set interval, to a group f…
There are cases when e.g. an IT administrator wants to have full access and view into selected mailboxes on Exchange server, directly from his own email account in Outlook or Outlook Web Access. This proves useful when for example administrator want…
If you’ve ever visited a web page and noticed a cool font that you really liked the look of, but couldn’t figure out which font it was so that you could use it for your own work, then this video is for you! In this Micro Tutorial, you'll learn yo…

729 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question