Adobe Connect Support Blog

December 8, 2022 /Adobe Connect 12 /Install /

‘UnknownHostException’ errors observed in Adobe Connect 12 installation

Environment :

Adobe Connect 12 Windows installation On-premise

Observation :

Following errors could be noticed in your Adobe Connect 12 installation in the debug.log

[12-08 09:27:45,869] RTCClient-startup (ERROR) error in initial download         at Method) ~[?:1.8.0_341]         at$2.lookupAllHostAddr( ~[?:1.8.0_341]         at ~[?:1.8.0_341]         at ~[?:1.8.0_341]         at ~[?:1.8.0_341]         at ~[?:1.8.0_341]         at org.apache.http.impl.conn.SystemDefaultDnsResolver.resolve( ~[?:?]         at org.apache.http.impl.conn.DefaultHttpClientConnectionOperator.connect( ~[?:?]         at org.apache.http.impl.conn.PoolingHttpClientConnectionManager.connect( ~[?:?]         at org.apache.http.impl.execchain.MainClientExec.establishRoute( ~[?:?]         at org.apache.http.impl.execchain.MainClientExec.execute( ~[?:?]         at org.apache.http.impl.execchain.ProtocolExec.execute( ~[?:?]         at org.apache.http.impl.execchain.RetryExec.execute( ~[?:?]         at org.apache.http.impl.execchain.RedirectExec.execute( ~[?:?]         at org.apache.http.impl.client.InternalHttpClient.doExecute( ~[?:?]         at org.apache.http.impl.client.CloseableHttpClient.execute( ~[?:?]         at org.apache.http.impl.client.CloseableHttpClient.execute( ~[?:?]         at com.adobe.connect.webrtc.WebRTCClientSynchronizer.downloadAndInstallUpdatedWebRTCClient( ~[?:?]

Note : that this is a general message and is not applicable to or indicative of a problem within the on-premise environment. This can be ignored unless you notice any specific issue with your Connect and WebRtc installation setup.

This is tracked as Bug#CONN-4136459 and is in plan to be fixed with an upcoming version of installer release.

Adobe Connect 12, Install

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