Comments on: Solution for the slow network for Virtual PC on Windows 7

By: David S.

David S. — Wed, 16 Jun 2010 21:30:24 +0000

Me too! In my case, the registry setting also cured slow performance of some applications that are not obviously connecting to the network, such as MS Word.

By: F.C.G.

F.C.G. — Wed, 26 May 2010 10:46:01 +0000

GREAT!, I was getting crazy with this problem!!!, it works!!

By: Joe Albahari

Joe Albahari — Wed, 26 May 2010 03:08:31 +0000

Works for me, too. Thanks!!!

By: kevin

kevin — Thu, 08 Apr 2010 15:35:01 +0000

outstanding solution. my customer is very happy.

By: Anthony Honstain

Anthony Honstain — Sat, 20 Feb 2010 01:07:46 +0000

Amazing! I can’t thank you enough.

By: Blaž

Blaž — Thu, 18 Feb 2010 11:00:11 +0000

If only this would be a global concept of mutual help. Life would be much easier. ;) Without internet (people sharing experiences and knowledge) I would never be able to copy files between host and guest VM, using a mapped drive. ;)
Thank you so much!!!

By: Joe

Joe — Fri, 12 Feb 2010 15:06:15 +0000

Thanks very much. Found this article with the first Google search.

By: Marko

Marko — Wed, 10 Feb 2010 23:18:45 +0000

Excellent! This worked for me too! I’m running Win 7 64bit on the host, and a few VMs using the new Windows Virtual PC (not VPC2007). One VM is Win 2003 server, and another is Win XP pro SP3. Both had exhibited the same problem with slow network in VM. Although I mostly noticed it when trying to copy files between the HOST and a VM (and vice-versa). Oddly, copying a file from a VM to a different network drive (one sitting on a different physical server), it worked pretty fast. But it was pretty impossible trying to move even a 5MB file between the host and guest VM, using a mapped drive. it works fine using Integrated services mapping, but that doesn’t work for everything I need.

One thing I wasn’t sure about whether I needed to add a 64bit or 32bit DWORD value into the registry, so I just went with 64bit (it gave me an option to create either one). When I rebooted, everything was snappy!!!! :-)

Thanks!

By: Jeff Lockhart

Jeff Lockhart — Sat, 06 Feb 2010 11:28:34 +0000

So glad you found a solution to this! I opted to use method 3 and disable the task offloading in the NIC driver itself since all my virtual machines connect through one NIC. Incredibly slow network performance problem solved! Thanks!

By: David Goodall

David Goodall — Thu, 28 Jan 2010 02:35:57 +0000

Gold! thanks for your work, I was about to go down the same track