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Microsoft Windows [Version 6.1.7601]
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C:\Users\JOURIS SIMBOLON>sc qc npf
[SC] QueryServiceConfig SUCCESS

        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       :

C:\Users\JOURIS SIMBOLON>sc start npf
[SC] StartService: OpenService FAILED 5:

Access is denied.


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

asked 15 May '12, 00:46

Simbolon's gravatar image

accept rate: 0%

converted to question 15 May '12, 01:18

grahamb's gravatar image

grahamb ♦

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

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answered 15 May '12, 01:21

grahamb's gravatar image

grahamb ♦
accept rate: 22%

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

Elevated DOS prompt

  1. Click the Start button
  2. In the Search box, type command prompt.
  3. 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

Use runas to start the service in any DOS box.

runas /user:administrator sc start npf


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answered 15 May '12, 01:27

Kurt%20Knochner's gravatar image

Kurt Knochner ♦
accept rate: 15%

edited 15 May '12, 01:34

You can refer to this method to make your NPF driver start normally.

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answered 20 Jan '15, 18:57

OliviaLewis's gravatar image

accept rate: 0%

run command prompt in administrator mode it will start.

enter code: net start npf

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answered 01 Nov '16, 10:09

karan9537's gravatar image

accept rate: 0%

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question asked: 15 May '12, 00:46

question was seen: 16,678 times

last updated: 01 Nov '16, 10:09

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