I recently upgraded to 7.8.2 Web Security and have run into a similar problem I had at 7.7.3
One of my remote network agents cannot start / immediately stops on manually starting it.
I tried the 'solution' that I have been presented in the past of removing all of the .p12 files, clearing caches, waiting and restarting... but this has not fixed the problem in 7.8.2.
Is there a new 'fix' for this under 7.8.2?