Solve the 651 error during VPN connection in Windows 7

Introduction

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If you are not talking nonsense, you can directly get into the subject. Today, I tried to create a new VPN in the Windows 7 operating system, but it was unfortunate that I always encountered such an error: A window popped up with "all devices connected", before I could click "OK ", the bad message "error 651: the modem (or other connecting device) has reported an error ".

Solution found -- remove the VPC 2007 SP1 on your machine, if any.

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Problem description

I am not sure exactly when this started happening but as of 6/5 it was still working.
When I try to connect to my company's VPN (via PPTP) I get an error 651. there is a dialog window that opens that says "all devices connected "... not sure what is going on.
I disabled all firewils and even uninstalled Kaspersky. Still, same error.
I re-created the VPN network connection, still same error.
I uninstalled any of my recently installed programs (iTunes upgrade, etc.). Same issue.
I have med a system restore to 6/5 and I am still getting the same issue.
I have this happening on my home desktop as well as my work laptop from two different locations (will try more when I get a chance) through both wired and wireless connections. as far as I know (and have been told) Nothing has changed on my own LAN.
The only things I see online for this error are related to pppoe and firewils... Not sure if pppoe has anything to do with it at this point.
Any other thoughts on what I can try?
Info:
Windows 7 RC, all latest critical and even some optional updates installed
LAPTOP: Dell d830, 64bit, 4 gb ram, 80 GB HDD
Desktop: Pentium 4, 2 gb ram, 120 GB HDD

Thanks,
Jason

Solution

I have the same problem after virtualbox installation.
Uninstall virtualbox solve the problem for me.
Do you have virtualbox or other virtualization software?

Feedback

Original article link

Http://social.technet.microsoft.com/Forums/en-US/w7itpronetworking/thread/15526354-b60e-4f2b-8dd7-ee0785f1d075

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Postscript

Good luck ~~