NPF Driver fails to start

Question

Microsoft Windows [Version 6.1.7601] Copyright (c) 2009 Microsoft Corporation. All rights reserved. C:\Users\JOURIS SIMBOLON>sc qc npf [SC] QueryServiceConfig SUCCESS SERVICE_NAME: npf TYPE : 1 KERNEL_DRIVER START_TYPE : 3 DEMAND_START ERROR_CONTROL : 1 NORMAL BINARY_PATH_NAME : system32\drivers\NPF.sys LOAD_ORDER_GROUP : TAG : 0 DISPLAY_NAME : WinPcap Packet Driver (NPF) DEPENDENCIES : SERVICE_START_NAME : C:\Users\JOURIS SIMBOLON>sc start npf [SC] StartService: OpenService FAILED 5: Access is denied.

C:\Users\JOURIS SIMBOLON>

See my own… I don’t know what happened with my computer…

Maybe, you have suggestion what should I do to fix it.. Thanks before.. GBU

Answer 1

You need Administrator privilege to start a service. Open your command prompt by right clicking the icon and selecting "Run as administrator".

Answer 2

Error Nr. 5 means: NO ACCESS. Please start the service as administrator using either of these ways:

Elevated DOS prompt

Click the Start button
In the Search box, type command prompt.
In the list of results, right-click Command Prompt, and then click Run as administrator. If you are prompted for an administrator password or confirmation, type the password or provide confirmation.

Within that DOS/CMD box run this command

sc start npf

runas
Use runas to start the service in any DOS box.

runas /user:administrator sc start npf

Regards
Kurt

Answer 3

You can refer to this method https://ask.wireshark.org/questions/4843/the-npf-driver-isnt-running?page=1&focusedAnswerId=38691#38691 to make your NPF driver start normally.

Answer 4

run command prompt in administrator mode it will start.

enter code: net start npf