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Windows 7: Windows 7 Pro VPN host Error 720

06 Oct 2010   #1

Windows 7 Pro 64bit
Windows 7 Pro VPN host Error 720


I am having a very irritating problem with my Desktop computer.. Here is what I am trying to accomplish:

I am trying to set up a VPN on my Desktop computer (HOST) so that I can connect to it from my school with my laptop (CLIENT). At one point it was working, but now every time I try to connect I get "Error 720: A connection to the remote computer could not be established. You might need to change the network settings for this connection."

I know the issue is NOT my laptop, because I can connect to another VPN that I currently have running in place of the one at home (One obvious reason I'd like the home VPN is that my current one is in Sweden...)

I also have little reason to believe that my network settings are wrong, because I have the Host computer set as DMZ on my Linksys WRT160N Router and have forwarded the PPTP Port to it as well (Just in case.)

I've gone as far as reformatting my Desktop computer and doing NOTHING but installing Network Adapter drivers and an antivirus, and then setting up the VPN and it STILL doesn't work... this is very frustrating.

My Desktops spec's are:

Windows 7 Professional
Intel DP55KG Motherboard w/ integrated Gigabit LAN

My Laptop specs are:

Windows 7 Home Premium
ASUS G51Jx-A1 w/ Atheros 8295 Mini Wifi Adapter.

I've trialed this with other machines trying to connect to the Host computer with the same result of "Error 720:"... It will connect, verify the username and password, and this error shows up when trying to register the client computer onto the network.

Any help is appreciated, thank you.

My System SpecsSystem Spec
06 Oct 2010   #2

Systems 1 and 2: Windows 7 Enterprise x64, Win 8 Developer

Another person on this forum had a similar problem:

Windows 7 VPN Problems
My System SpecsSystem Spec
01 Oct 2012   #3

Windows 7 ultimate 64-bit

Don't know if you still have the issue, I recently started having the issue (seemingly out of no-where); just thought I'd post my fix. I have SuperAntiSpyware on my computer (I'm not advertising for them, just don't want anyone to go through all the long hours I went through), there's a tool in the "Repairs" section called "Repair broken Network Connection (Winsock LSP Chain)". As the program states, please use with caution. Once I ran that, I had to restart as it did something in the registry. Once it came back up, BAM, fixed; after about a month of trying to fix it... Hope this helps someone...

Edit: Btw, it says it's for Windows XP, I used it on Windows 7 ultimate 64-bit and it worked no problem.
My System SpecsSystem Spec
05 Aug 2014   #4

Windows 7 Pro 64-bit

I wanted to chime in and share what fixed error 720 on our network. Try this- Inside the user's account properties in Active Directory, check the box next to "Control access through NPS Network Policy"
My System SpecsSystem Spec

 Windows 7 Pro VPN host Error 720

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