After Upgrade PerformanceGuard Behaves Strangely

Symptom: After you have upgraded PerformanceGuard to a new version, the PerformanceGuard web interface looks strange (old icons, and so on), or you get error messages because the web interface can’t connect to the PerformanceGuard Backend and Frontend servers.

Possible causes and solutions

This can happen if the PerformanceGuard cache and work folders weren’t cleaned up before the new version of PerformanceGuard started. It can also be caused by old files in your browser’s cache.

First, clear your browser’s cache and reload the web interface. If the problem remains, clean up the folders on the PerformanceGuard server:

1. Select Start, type services.msc, press ENTER, and stop these services: PerformanceGuard Backend Server, PerformanceGuard Frontend Server, PerformanceGuard Web Server, and PerformanceGuard Web Server 2.
2. Go to [PerformanceGuard installation folder]\collector\cache\ and delete all files in that folder.
3. Go to [PerformanceGuard installation folder]\display\work\ and delete all files in that folder.
4. Optionally, delete the old log files in these folders, so that the logs only contain entries from the new version:
   • [PerformanceGuard installation folder]\collector\logs\
   • [PerformanceGuard installation folder]\display\logs\
   • [PerformanceGuard installation folder]\notification\logs\
5. In Services, start the PerformanceGuard Backend Server, PerformanceGuard Frontend Server, PerformanceGuard Web Server, and PerformanceGuard Web Server 2 services again.