Certificates is preventing Lync Server from functioning

Hi Guys, 

My Lync Server 2013 Front End services suddenly stopped working. After checking Event logs, i find out that some certificate has expired but in MMC console also certificate validity seems to be fine. 

I can see below messages in the event log:

Warning

A configured certificate could not be loaded from store. The serial number is attached for reference.

Extended Error Code: 0x800B0101(CERT_E_EXPIRED).

Error: 

A serious problem related to certificates is preventing Lync Server from functioning.

Unable to use the default outgoing certificate.
Error 0x800B0101(CERT_E_EXPIRED).
The certificate may have been deleted or may be invalid, or permissions are not set correctly.
Ensure that a valid certificate is present in the local computer certificate store. Also ensure that the server has sufficient privileges to access the store.

Cause: The Lync Server failed to initialize with the configured certificate.
Resolution:
Review and correct the certificate configuration, then start the service again.

My lync server is down, and clients are not able to login. Please provide some solution. 

Thanks and Regards, 

Ankit

August 7th, 2015 12:54am

Please request a new certificate or Assigned a renew certificate using Lync deployment wizard step 3

you can also refer

http://terenceluk.blogspot.in/2013/09/new-lync-server-2013-deployments-front.html

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August 7th, 2015 2:45am

Hi Edwin, 

Thanks for the help, it worked for me. 

Regards, 

Ankit

August 7th, 2015 3:21am

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