Failed to establish session and parse security token: 599 Internal Exception (SSL connection failed for x.x.x.x

CoolNet Spa

• October 03, 2025 17:47

Hi Community, im trying to migrate from Ubuntu v20.04 whm118 to Ubuntu v22.04 whm 126 but when im using the transfer tool i get the following issue:

Failed to establish session and parse security token: 599 Internal Exception (SSL connection failed for x.x.x.x: hostname verification failed ) at /usr/local/cpanel/3rdparty/perl/536/cpanel-lib/cPanel/PublicAPI.pm line 526.

I have already used the destination hostname FDQN, local IP, external IP but it has been the same.

• 

  cPRex Jurassic Moderator

  • October 03, 2025 18:17

  Hey there!  Were you able to work through our troubleshooting steps here?

  https://support.cpanel.net/hc/en-us/articles/1500000847862-Connecting-to-a-remote-host-via-Transfer-Tool-results-in-Connection-timed-out

  It sounds like there could be a firewall on one of the machines leading to this issue, but that should help you track it down.

  1

Please sign in to leave a comment.