EM12c Weblogic Admin Console Access gives Error: ERR_SSL_PROTOCOL_ERROR

(Doc ID 2315002.1)

Last updated on OCTOBER 09, 2017

Applies to:

Enterprise Manager Base Platform - Version 12.1.0.5.0 and later
Information in this document applies to any platform.

Symptoms

Trying to access EM's Weblogic Admin console gives following error after configuring WLS with TLSv1.2

This website can not provide a secure connection
ERR_SSL_PROTOCOL_ERROR

$EM_INSTANCE_HOME/gc_inst/user_projects/domains/GCDomain/servers/EMGC_ADMINSERVER/logs/EMGC_ADMINSERVER.log file reports

####<Aug 10, 2017 3:48:45 PM CEST> <Debug> <SecuritySSL> <tkl116> <EMGC_ADMINSERVER> <ExecuteThread: '0' for queue: 'weblogic.socket.Muxer'> <> <> <610bb2df061dca5b:116a635d:15dc0724e4d:-8000-00000000000000c2> <1502372925698> <BEA-000000> <[Thread[ExecuteThread: '0' for queue: 'weblogic.socket.Muxer',5,Thread Group for Queue: 'weblogic.socket.Muxer']]weblogic.security.SSL.jsseadapter: SSLENGINE: Exception occurred during SSLEngine.unwrap(ByteBuffer,ByteBuffer[]).
javax.net.ssl.SSLHandshakeException: Certificates within the CertificateMsg to be sent to the client contain signatures which are not allowed.

Cause

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