Question

Struggling to delete phantom Hyper-V virtual NICS left behind in Server 2008

Asked by: lukeglazebrook

I am in desparete need of help, and am experiencing a great deal of emotional stress in relation to the following ;(

In an effort to resolve...

http://www.experts-exchange.com/Microsoft/Applications/Virtual_Server/Hyper-V/Q_24778073.html

I wish to delete multiple phantom NICS that were created by Hyper-V.  Hyper-V evidently has not deleted them as it should have (see screen shot highlighting the non-existing NICS).  I have tried the following with no success....

- Resetting the TCPIP stack via the auto tool found here ...
http://support.microsoft.com/kb/299357

- Using http://support.microsoft.com/kb/269155 I tried removing using "Method 1" unfortunately with "method 1" even though I ran cmd.exe as an admin when I right click and un-install nothing actually seems to happen.  

- When I try using "method 2" bizarrely the 64bit version of "DEVCON" produces the following when run...

"This version of C:\devcon\devcon.exe is not compatible with the version of Window
s you're running. Check your computer's system information to see whether you n
eed a x86 (32-bit) or x64 (64-bit) version of the program, and then contact the
software publisher."

And although I can get the 32bit version to work if I try to run the command to remove the unwanted virtual NIC I get a failure message (see attached).  Would someone kindly take a look at my syntax I probably screwed up :(

I am now at the stage where I would be happy to risk deleting them straight out of the registry if I could confidentally identify them and had some guidance.  Strangely when I tried to open the registry "config" folder I believe relates to the configuration of ome of the virtual NICS it states access denied.  I dont however get access denied to several some others.

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Asked On
2009-10-05 at 11:28:41ID24786485
Topics

Hyper-V

,

Network Cards & Adapters

,

Windows Server 2008

Participating Experts
1
Points
100
Comments
19

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Answers

 

by: lukeglazebrookPosted on 2009-10-05 at 13:28:58ID: 25499364

UPDATE!

I decided to be brave and attempt to find the registry entry and delete it.  I searched for the Phantom Virtual NIC's friendly name within the registry and attempted to delete that key.  It was simply impossible even after granted everyone full control in the permissions.  I even tried using Malware Bytes RegASSasin which apparently can remove stubborn registry keys.  I am starting to think this may be the root cause of the problem, can anyone advise?

See Screen shot attached

 

by: lukeglazebrookPosted on 2009-10-05 at 13:31:06ID: 25499379

Reg Screenshot

 

by: lukeglazebrookPosted on 2009-10-05 at 15:15:44ID: 25500348

Extremely helpful mate thanks, that link would suggest to me that the reason Devcon wont work for me is that its not actually a 64bit version.  Trouble is I dont have access to a Server 2003 64bit disk, a XP 64bit, or Vista 64 Disk.  Believe it or not I only run Windows 7 and server 2008 in my enviroment, and it does not appear to my on either of those disks.

And would you believe it I just chucked all the disks I needed out about 2 days ago Grrrrrrrrr!!

 

by: lukeglazebrookPosted on 2009-10-07 at 13:59:35ID: 25520000

I downloaded Server 2003 R2 specifically to ensure I was using a 64bit compatible version of Devcon (think I was anyhow).  Unfortunately whenever I try to run the suggested commands I receive the following error (see screenshot).

Any ideas?  I believe devcon simply removes the registry entries I have already located.  Unfortunately however I can't take ownership of them and delete them manually either.

 

by: lukeglazebrookPosted on 2009-10-07 at 14:00:51ID: 25520019

I downloaded Server 2003 R2 specifically to ensure I was using a 64bit compatible version of Devcon (think I was anyhow).  Unfortunately whenever I try to run the suggested commands I receive the following error (see screenshot).

Any ideas?  I believe devcon simply removes the registry entries I have already located.  Unfortunately however I can't take ownership of them and delete them manually either.

 

by: dariusgPosted on 2009-10-07 at 14:02:50ID: 25520047

Have you tried deleting others for a test?

 

by: lukeglazebrookPosted on 2009-10-08 at 01:10:11ID: 25523047

Good question,

 - I am unable to remove any known Virtual NICS using the Devcon I have (it simply responds with the above error)

- I am unable to remove any known Virtual NICs using device manager either.  After right clicking and selecting remove it simply goes through the motions, finishes however remains in the list.

- I have just attempted to remove a NIC referred to as
"Realtek RTL8168/8110 Family PCI Gigabit Ethernet NIC (NDIS 6.0) - #2"
I used device manager and although it hung during the un-install process and I had to terminate using Ctrl, Alt, Del.  The device did actually disappear from the list.  I presume it was a real NIC, however I did not check I know that model NIC is physically install in the machine at the moment.

 

by: dariusgPosted on 2009-10-08 at 05:35:14ID: 25524633

Have you tried removing all NICs have the VM in the VM settings?

 

by: lukeglazebrookPosted on 2009-10-08 at 05:49:29ID: 25524758

Hyper-V is no longer even installed mate, the role has been remove.  And while it was installed I did try exactly that mate.

 

by: dariusgPosted on 2009-10-08 at 06:15:04ID: 25524966

Ok, gottcha.

I have you went through registry yet?

 

by: lukeglazebrookPosted on 2009-10-08 at 07:43:13ID: 25525989

Yep been through the registry and I am fairly sure I have located what needs to be deleted.  However the problem is I cant delete the entries, this may even be the reason devcon cant uninstall the drivers?  And unfortuately I cant take ownership of or changes the permissions on the registry entries either, it wont let me.  I am assuming the current owner is "SYSTEM" ?

 

by: dariusgPosted on 2009-10-08 at 07:53:35ID: 25526120

Have you booted in Safe Mode and try?

 

by: lukeglazebrookPosted on 2009-10-10 at 05:12:59ID: 25541987

Yes exactly the same  :(

 

by: dariusgPosted on 2009-10-10 at 08:08:19ID: 25542553

Man, And Hyper-V Role is not in use anymore, right? If you re-enable Hyper-V can remove them then?

 

by: lukeglazebrookPosted on 2009-10-10 at 08:51:56ID: 25542688

re-enabled hyper-v its the same in safe mode and normal.  And unfortuately it would seem hyper-v is a dead duck in the water since none of the virtuals nics I create work anymore, I think this is gonna end up in a server re-build :(

 

by: dariusgPosted on 2009-10-10 at 16:01:27ID: 25544208

Man, I wonder what is holding on to those settings. I would give MS a call.

 

by: lukeglazebrookPosted on 2009-10-21 at 16:17:24ID: 25629451

I had to rebuild the server in the end :(  I get the impression it was a knowm problem with early Hyper-V release's.

 

by: dariusgPosted on 2009-10-22 at 05:52:22ID: 25633484

Not a problem I wish we could have found the root cause though.

20120131-EE-VQP-002

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