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December 8th, 2006 21:00

What does the Microsoft Tun Miniport Adapter do for me?

While 'browsing' the Device Manager in search of another problem I noted the existence of the Microsoft Tun Miniport Adapter the impertinent Exclamation Point.  Upon investigation the "device's" properties indicate "This device cannot start. (Code 10)".  I scourered the MS site for the related driver (TUNMP.SYS) in an attempt to determine the need or purpose but like always at that site to the point of frustration.
 
Can someone explain the purpose of this little rascal and if it is needed for a home network of two (2) Dell Dimensions and one (1) Dell Laptop -  hardwired and wireless.  It appears only on the Dimension 8400 which is not serving as a server or internet access point.
 
If its needed, how do I 'fix' it...I have already 'reinstalled' the related security patch?
 
If its not needed, how do I eradicate it from the hardware list?

2 Intern

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12.7K Posts

December 10th, 2006 02:00

You will probably never need it, ignore it
 
Straight from the mouth of the man who created it:
"Microsoft Tun Miniport Adapter (comes with Microsoft Windows 2003 .Net Server), a network driver that provides a tunnel with a File API interface, through which a user-mode Windows application or service can interact with the network stack as if the application were a network interface."
 
Do the following at your own risk if you must remove it from device manager.
 
This component is part of IPv6. IPv6 appears to be available with SP2, but may also have been available via an earlier service pack or hotfix.
If you're not using IPv6 (I assume you wouldn't be), you can uninstall it by executing the following command at a command prompt:
ipv6 uninstall
If IPv6 was installed at the time of execution, you will see...
'Uninstalling...
A reboot is required to complete this action.' Restart your PC to complete the process, as advised.
With IPv6 uninstalled, you may be able to remove 'Microsoft Tun Miniport Adapter ' from Device Manager.
To prevent the service from starting up during Windows' boot, delete the following registry keys:
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\tunmp
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet002\Services\tunmp
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\tunmp
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