After installing the Patch 2 for 12.6 the JNLP console fails to open. The error message is "JNLPSigningException Failed to validate signing of launch file. The signed version does not match the downloaded version.
MSI console works fine.
1) Stop the Master agent service.
2) Move the existing console.jnlp from below location to another location as backup.
3) Place the attached console.jnlp on the master under following location
4) Start the Agent Service.
5) If the issue still persist, please re-download the console.jnlp from the following console url.