I had to raise a PMR on a problem I and others in my company had with the Notes client. After enforcing TLSv1.2 in Connections 5.5 using the following configuration in httpd.conf the Files plugin would not work but the Activities and Status Updates plugins would.
SSLProtocolDisable SSLv2 SSLv3 TLSv11 TLSv10
SSLCipherSpec TLSv12 +TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384 +TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256 +TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA384 +TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA +TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA256 +TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA +TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 +TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256 +TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384 +TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256 +TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA
I kept seeing the following screen and clicking “try again using existing options” did nothing.
Whilst clicking on “try again using existing options” I would see the following in IHS.
[Wed Mar 29 14:30:41 2017] [warn] [client xxx.xxx.xxx.xx] [7f9a480ec800]  SSL0222W: SSL Handshake Failed, No ciphers specified (no shared ciphers or no shared protocols). [xxx.xxx.xxx.xx:49296 -> xxx.xxx.xxx.xx:443] [14:30:41.000571168] 0ms
The SSL certificate is at 4096 bits and I had previously replaced US_export_policy.jar and local_policy.jar with the unrestricted policy jars so that was not the problem.
I found, oddly, that if I swapped to the IBM Sametime Meetings plugin first and then changed to Files, my files would load…. Also, if I ran Fiddler and restarted my Notes client but went directly to Files it would load too. Weird.
I had a screen share with Elizabeth Hecht and Jacqueline Chewens to show them the odd behaviour and they too were baffled. Liz came across a thought of the version of Java being used may not be allowing connectivity to Files and asked whether I had applied the Java update for FP6? Not having so much focus on Notes and Domino of late I told her I wasn’t even aware that previously you were supposed to update the version of Java being used by the Notes client.
To test this I updated Notes to FP8, which bundles in the Java update and low and behold the Files plugin started working. Also, there was no need to replace the jars with the unrestricted ones!
The version of Java now in play is as follows.
c:\Program Files (x86)\IBM\Notes\jvm>java -version
java version “1.8.0_121”
Java(TM) SE Runtime Environment (build 1.8.0_121-b13)
Java HotSpot(TM) Client VM (build 25.121-b13, mixed mode, sharing)
BTW – if Connections enforces SSL then you need to make sure that com.ibm.documents.connector.service/ENABLE_SSL=true is set in the plugin_customization.ini.