May 20, 2020

error 800: Unable to establish the VPN connection. - Cryer About the author: Brian Cryer is a dedicated software developer and webmaster. For his day job he develops websites and desktop applications as well as providing IT services. He moonlights as a technical author and consultant. Commmon VPN Error Codes and Troubleshoot Guide by VPNSTORE (i) Check whether the VPN server is reachable or not (or else Ping the server) (ii) If you are using PPTP, check whether the PPTP Port (TCS 1723) or GRE Port (47) blocked in Firewall. How to Fix VPN Error 807 - Network Connection Interrupted Verify that your VPN IP address, username, and password are all correct. Open the VPN client and go to VPN Properties > Security tab > Connection type > PPTP. Select VPN IP address > server address > remove “http: //” and “/”. Now check your connection. VPN Error 800. - Windows 7 Help Forums

Sep 11, 2012

2) If you can establish the VPN from the desktop at home but not from the laptop. Make sure no security software like Microsoft OneCare software that blocks the GRE. VPN ERROR (800) Solution AnyConnect VPN Client Troubleshooting Guide - Common Aug 30, 2018

How to fix VPN error codes (800, 442 & more) | Step guide

How to Fix Client and Server-Side VPN Error 800 Nov 15, 2019