Fails to Launch or Shows an Untrusted Certificate Error

 

Issue

After launching Predict! Risk Analyser (PRA) from within Predict! Risk Controller, the application either fails to open or displays an untrusted certificate error. The user is not automatically authenticated despite having a valid licence.

Note: Likely cause: the user account does not have write permissions to the PRA installation directory.

 

 

Solution

Method 1 — Reinstall PRA with correct permissions (recommended)

• Uninstall PRA by running uninstallPRA.exe from the root of the PRA installation folder. This removes all files and registry entries.
• Reinstall PRA into a directory where full read/write permissions are confirmed.
• Open an administrative Command Prompt and run the following, replacing the paths and filename with the correct values for the environment:
  • C:\PRA\pra\pra.exe C:\Users\[Username]\Downloads\-1.predict

• On first launch, a certificate trust prompt will appear. Accept it and close PRA.
• Relaunch PRA — it should now log in automatically without a certificate prompt on all subsequent launches.

 

Method 2 — Manually add the certificate to the trust store

Use this method if:

1. reinstalling is not an option
2. the IT team needs to resolve this centrally.

• Copy the InstallCert folder from the installation media (Predict! Risk Controller\Scripts\InstallCert) to C:\pra on the affected machine.
• Unzip the InstallCert folder.
• Open a Command Prompt in the unzipped InstallCert folder and run the following commad. 
  • \pra\jre\bin\java InstallCert [predict-server-url]
  • Be sure to replace the URL with the correct Predict! server address (without http:// or https://):

 

• An error stack trace will appear followed by a prompt to press a number.
  • Type 1 and press Enter.
• A file named jssecacerts will be created in the folder.
  • Copy this file to \pra\jre\lib\security, overwriting the existing cacerts file.
• Relaunch PRA and confirm the certificate warning is no longer shown.

 

Troubleshooting

• If neither method resolves the issue, ask IT to reinstall PRA using an account with local administrator privileges to confirm whether permissions are the root cause.
• If the certificate warning returns after a Predict! server certificate renewal; the InstallCert process (Method 2) must be repeated.