I try to run PRTG Network Monitor. Core server starts normally. After installation, I can't connect to local probe, because Local probe does not start automatically after installation.

The Event log contains the following entry: Timeout (30000 milliseconds) waiting for the prtg probe service to connect.

When run from the command line I get the message:

The application or DLL C:\Windows\system32\traffic.dll is not a valid Windows image [...]

Article Comments

Very likely, the traffic.dll is damaged. On the Windows command line, execute the following command to solve the issue:

sfc /scannow

Afterwards, the Windows service "Local probe" should start normally.

For details about the sfc command, see Description of Windows XP and Windows Server 2003 System File Checker (Sfc.exe)


Feb, 2012 - Permalink