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I have a problem since nearly 2 or 3 month now. Every time I start win 8.1 64 Bit a new Tap Win32 Adapter OAS and a V9 Tap adapter appears in the system and my internet is getting worse.

Can somebody help please?!

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  • What software do you have installed on your OS? OpenVPN? Any other VPN software? Any Virtualization software?
    – Just Lucky Really
    May 18, 2014 at 10:53

3 Answers 3

Reset to default
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Those adapters come with Cyberghost VPN. First you must be sure that you delete Cyberghost completely from your computer, then go to Network and Sharing Center or device manager and disable those adapters. You can easily remove them from device manger and just restart to have it take affect.

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Do the following and they will disappear

  1. Win+R -> Type in "msinfo32" press Enter.
  2. Now you will see the following Console Window. MSinfo32 console
  3. In the left pane navigate to components ->Network -> Adapter
  4. Here, you can see all the Network Adapters listed
  5. Find the TAP adapters and see the Driver location as shown in the below image Location of TAP adapter driver
  6. I have given a sample image as I have already deleted the TAP adapters. Don't delete the Microsoft Adapters.
  7. Find the Tap adapters location in listed adapters & go to the location for example: C:\Windows\System32\Drivers\TAP.sys and delete them.
  8. Go to to Device Management and uninstall the TAP adapters under Network Adapters.

Note: While uninstalling, tick the option "Delete the Driver" if asked for a prompt.

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I have finally found a solution...i have downloaded program called Process monitor https://technet.microsoft.com/en-us/sysinternals/processmonitor.aspx

And tried to find which process creates the file tap0901.sys And there it was...

in C:\Windows\Temp

i had some kind of mallware that had a script for creating these damn TAP9 adapters...i deleted it and it's gone now!

C:\Windows\AutoKMS\AutoKMS.exe is the process which creates the InstallTAPAdapter.exe and it needs to be deleted!

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  • This does not answer the author's question, I can confirm as a Windows 10 user, that the existing answer does work. You can edit this answer, all you want, it still isn't an answer to this author's question.
    – Ramhound
    Jan 28, 2016 at 20:12
  • Ninja edit! Not changing my vote... AutoKMS isn't malware it's used to activate pirated versions of Windows! So your using a pirated copy of Windows if it exists on your machine
    – Ramhound
    Jan 28, 2016 at 23:57

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