Issue: Unable to Start Lync Server Audio/Video Authentication service.
Error: The Lync Server Audio/Video Authentication service on Local Computer started and then stopped. Some services stop automatically if they are not in use by other services or programs.
Basically there are five main services, Lync Server Access Edge, Lync Server Audio/Video Authentication, Lync Server Audio/Video Conferencing, Lync Server Web Conferencing and Lync Server Replica.
When you start Lync Server Audio/Video Authentication services, you will see above error. This error is because of Certificate which has not assigned to Lync Edge pool server.
Follow the below steps: - Assign the internal edge pool certificate to the “Lync Server Audio/Video Authentication” by using Lync PowerShell.
1. Run the following command to get the certificate thumbprint.
In result see the internal certificate, which issued by your Organization Certification Authority (CA).
You can open MMC and add certificate in personal you will see the certificates; you need to see internal certificates. In details tab you will see thumbprint.
2. Use this command in Lync Server Management Shell:
Set-CSCertificate-Type AudioVideoAuthentication -Thumbprint 9ABCDEFyourINTARNALthumbprintkey654321 –Verbose