Unable to start Designer or Client ERROR "This Launch Jar Signature is invalid. Contact an administrator"

Ignition
15

Hey all,

If you are trying to debug certificate path issues on Windows within the launchers you have to do two things to see the evaluation:

  1. next to the launcher's executable file (in this case designerlauncher.exe create a file with the name designerlauncher.l4j.ini and add a single line with the contents of -Djava.security.debug=certpath and save it.
  2. run the exe from the command line and redirect the output like so:
"C:\Users\%USERNAME%\AppData\Roaming\Inductive Automation\Designer Launcher\designerlauncher.exe" 2> "C:\Users\%USERNAME%\Desktop\stderr.log" 1> "C:\Users\%USERNAME%\Desktop\stdout.log"

(Update the paths as required)

once you attempt to connect over https you should see the stderr.log file populated with the output from the jsse debugging.

I would recommend cleaning out your launcher configuration of other saved apps and altering the launchers logging level to something like trace to try to get a complete picture of what is happening.

EDIT: updated to designer launcher instead of the Vision Client Launcher.