Event viewer shows:
Event ID: 2003
Source: Perflib
Level: Warning
User: System
The configuration information of the performance library "C:\Windows\system32\BEPerfDll.dll for the "Backup Exec" service does not match the trusted performance library information stored in the registry. The function in this library will not be treated as trusted.
This event is logged when the configuration information of the performance library (BEPerfDll.dll for the Backup Exec service) does not match the trusted performance library information stored in the registry.
The following steps can be tried to stop this event in event viewer -
1. Right click on Windows title and launch command prompt ( Admin) - The commands below can be run from C:\Windows\System32\
2. Type the command - unlodctr "Backup Exec" and hit Enter
3. Type the command - lodctr BEPerfDll.ini and hit Enter
4. Reboot the Backup Exec server.