This issue usually occurs because the L2TP protocol isn’t allowed to go through your firewall. To fix the problem, you need to add a new rule in Windows Defender Firewall and allow ports 50, 500, and 4500 to go through your firewall. After doing that, L2TP will be unblocked and the VPN will start working. In this article, we will explore some of the best ways to deal with issues L2TP issues.
How can I fix blocked L2TP protocol on my VPN?
Allow L2TP connection through your Firewall
Note: It is very important that you make sure you are connected to the Internet before starting to set up your VPN connection. If this criterion is not met, Windows will show you an error message after a minute telling you that the server got no response after sending the data package, or that something is wrong with your modem. Following the steps presented in this article will surely help you regain access to your L2TP VPN service by making sure none of your firewalls are causing trouble. Please feel free to let us know if this solution helped you, by using the comment section below.
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