Calls to Lync fail to connect and the error shown in Lync logs show "The peer is using a wildcard certificate but did not identify itself with a NEGOTIATE request"


We believe Lync does not handle certificates that have a wildcard entry as the CN very well. Re-create the certificate using the FQDN of the Meeting Server as the CN. This does not need to be a public certificate in most cases: create a signed certificate with OpenSSL or a Microsoft CA server. Then upload the CA's Public Key to the Lync FE Server's Trusted Root Certification Authorities folder.

Last update:
21-May-2019
FAQ ID:
1046