While running a Javelin Flow with a RestPutActivity, we see the following error when attempting to reach the defined End-point.
The request was aborted: Could not create SSL/TLS secure channel.
As a test, we installed Postman on this same machine, and are able to connect with the End-point using the same RestPut call.
Release : 4.10
Component : Javelin
In order to troubleshoot the issue in detail, we had to get a Wireshark packet capture from the Javelin host while running the flows. Looking at the SSL/TLS 3-way handshake, we see that the handshake is taking place, however the Javelin host is sending an Encrypted Alert Message packet. When analyzing the handshake, we see the negotiated cipher is TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256, which is incorrect. The Windows Admin updated the Ciphers, and the issue is now resolved.