Web Conferencing Server connection failed to establish. Over the past %1 minutes Lync Server has experienced incoming TLS ...

Lync Server 2013

Web Conferencing Server connection failed to establish.

Over the past %1 minutes Lync Server has experienced incoming TLS connection failures %2 time(s). The error code of the last failure is 0x%3 (%4) and the last connection was from the host "%5".
Cause: This can occur if this box is not properly configured for TLS communications with remote Web Conferencing Server.
Resolution:
Check your topology configuration to ensure that both this host and remote Web Conferencing Server can validate each other TLS certificates and are otherwise trusted for communications.

Web Conferencing Edge Server is no longer throttling server connections Web Conferencing Edge Server is no longer throttling ... Web Conferencing Edge Server startup is pending as configuration database is not yet available. Cause: Possible local configuration ... Web Conferencing Server archiving settings has been initialized Data Archiving enabled: %1 Block On Archiving Failure: %2 ... Web Conferencing Server capability settings have been initialized PSOM Listening Address(v4): %1 PSOM Listening Address(v6): ... Web Conferencing Server connection failed to establish. Over the past %1 minutes Lync Server has experienced incoming TLS ... Web Conferencing Server disconnected Connection from Web Conferencing Server from %1 disconnected. This event is reported ... Web Conferencing Server has been added to Web Conferencing Edge Server's trusted server list Web Conferencing Server with ... Web Conferencing Server has been removed from Web Conferencing Edge Server's trusted server list Web Conferencing Server ... Web Conferencing Server has restored connectivity with Office Web Apps Server, PowerPoint content broadcast to newer clients ...