[Winpcap-users] Error Starting NPF

[Gianluca Varenni]

Are you running any antivirus/antimalware software on that PC?

Have a nice day
GV
  ----- Original Message ----- 
  From: Andy Merrill 
  To: winpcap-users at winpcap.org 
  Sent: Tuesday, May 26, 2009 10:49 AM
  Subject: [Winpcap-users] Error Starting NPF


  I'm getting an odd error when I try to run WireShark. So I started doing some digging and found that WinPcap 4.0.2 is not starting up.  I've used it plenty of times in the past on other systems, but on this specific box I get an error in the Event Logs that says:

  "The NetGroup Packet Filter Driver service failed to start due to the following error: 
  This driver has been blocked from loading "

  So I tried to start it via command line with "net start npf" and got pretty much the same error of:

  "System error 1275 has occurred.

  This driver has been blocked from loading"



  Anyone have an idea why the drivers might be failing to load?



  This is on a Windows Server 2003 system running in a VPS. 


  Thanks,
  Andy Merrill



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