Troubleshooting and general information

Neagent stands for the Network Extension Agent and it facilitates the connection from your Mac to our VPN servers. Since our VPN app for Mac uses the IKEv2/IPSec VPN protocol, allowing the neagent to access Keychain is a necessary step to create a secure VPN connection.  Before you can connect, […]

The ProtonVPN Windows app and our Linux command line tool allow you to use two different transmission protocols depending on your situation. This article explains when to use each protocol and how to switch between them. ProtonVPN uses the OpenVPN VPN protocol, which supports the Transmission Control Protocol (TCP) and […]

ProtonVPN supports most popular Internet browsers. However, ProtonVPN uses cutting-edge technology that is only supported in the latest versions of these browsers. To maintain the level of security expected by our users, we occasionally need to drop support for outdated browser versions that do not have the security features we […]

Two-factor authentication on ProtonVPN Two-factor authentication (2FA) adds a layer of security to your ProtonVPN account by adding an extra verification to the login process for additional protection. Currently, ProtonVPN supports the one-time password (OTP) protocol, so accounts with 2FA enabled will be prompted to enter a 6-digit code upon […]

As of Sept. 18, 2019, the Chinese government is blocking access to ProtonVPN as part of a larger crackdown on Internet freedom.  The Chinese government works hard to control its citizens’ access to the Internet. The Great Firewall employs a vast system of technical tools, including DNS filtering, URL filtering, […]