This looks familiar. I believe the trust store was corrupted. You should be able to follow the steps below to get back into a working state.
- Navigate to the
C:\Program Files\Inductive Automation\Ignition\lib\runtime\jre-win\lib\security
directory. - Make a copy of the cacerts and cacerts.bak files and place in another directory. (They shouldn't be needed but I like to make copies before deleting files)
- Delete the cacerts file from its original directory.
- Re-name the cacerts.bak file to cacerts.
- Use the stop-ignition.bat file to stop the Ignition service.
- Use the start-ignition.bat file to start the Ignition service again.
For steps 5 and 6, you can also stop/start the service from Windows Services.