Lync Server 2013 Error – Lost Connection to all Web Conferencing Edge Services

Recently I started seeing the following event IDs 41026 and 41024 logged on my 3 front end servers every 15-30 min.

As this is a test environment I experienced a problem with one of my internal CA servers and created a new one.

I then re-issued certs for my front end from the new CA and the events stopped being logged.

Hope it helps.