Windows 10: Can only connect to VPN on TCP Ports 80, 443

Hi,


The following applies to the platform:

- Windows 10 Pro, Version 1909 OS Build 18363.720

- HP Probook 455 G3 16 GB ddr3 RAM


I am absolutely befuddled by the following problem and please note: I am not an expert, but not a novice either. Please note also that I have contacted Microsoft tech support, that of my IP provider and the VPN provider NordVPN and now SurfShark and none could figure this problem out.


So recently I decided to subscribe to a VPN service. I can connect under the following circumstances:

- openvpn-gui v11.14.0.0 from OpenVPN technologies I don't think the maker is relevant

- any provider VPN server that accepts a TCP connection over PORTS 80 -or- 443


Anything else seems to be blocked; on the Microsoft Network Monitor I can see the Sync message going out from my computer - multiple times - and absolutely nothing comes back. This is for ports that include 1194, 1443, 7070, 7777, 8008, and 8080.


I have tried the "usual suspects", all to no avail:

- completely removing McAfee security;

- poking holes in Windows Firewall ports, programs, as well as Windows antivirus

- trying in Windows Firewall to see what is so special about Ports 80 and 443; I do realize that these ports are the nominal ports for http and https respectively - I doubt this is a co-incidence.

- establishing a Windows manual VPN connection: it accepts the input, but then the device shows up as "Unavailable - device missing" in Network Connections in Ctrl Panel.

- ALL THE STEPS in https://windowsreport.com/vpn-blocked-windows-10/#2


Does anyone have any ideas ? I would at least like to know if it is even possible to do what I'm trying to do in Windows 10 !!


Thanks

Bob

:)

 

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