Win7 system connection VPN error 800 how to do?

What should I do if the Win7 system connects to the VPN with 800 errors? I believe that many users have encountered this situation. Recently, some users have reflected the 800 error in the connection VPN of Win7 system. What is going on? In fact, this may be caused by the fact that the Win7 system firewall is not shut down or the router's firmware has expired. In fact, Win7 system connection VPN 800 error solution is very simple, the following small series for everyone to introduce Win7 using VPN 800 error solution.

steps:

1, first restart the computer and turn off a network connection, and then turn off the firewall and the system comes with security software and third-party anti-virus software,

2. Change the window size in the TCP protocol on the VPN device port 1723 to 0.

3, reconfigure the VPN host's network settings, so that you can solve the 800 error problem, how, is it very simple?

The above is a small solution for everyone to introduce Win7 using VPN to solve 800 errors. If you have encountered the above situation, you can follow the above steps, after the operation is completed, there will be no more errors.