Troubleshooting and general information

The ProtonVPN symbol in the Windows systems tray serves as a shortcut to the application. To quickly establish a VPN connection, right click on the icon and press Connect.   Tip: when ProtonVPN is minimized, you can also connect by using the Quick Connect button.     Related questions How […]

In cases ProtonVPN can’t connect, please refer to the following list of solutions. Most of the steps described here can be done without direct support from our support team, but in case you get stuck or don’t know how to handle certain things, we will be there for you. Server […]

Having connectivity issues with the ProtonVPN Windows client? Read on for a checklist of things to solve your situation. For Windows, ProtonVPN is available in the form of our own ProtonVPN Windows application. It provides the easiest to use interface and you can connect with just a single click. However, […]

The ProtonVPN iOS app offers its users the choice of the OpenVPN and IKEv2 VPN protocols. Learn more about the advantages and disadvantages of different VPN protocols. Some users have noticed when they select OpenVPN in our iOS app, the amount of battery power our app uses dramatically increases. The […]

In this article, we discuss the factors that impact the speed of VPN connections and how you can increase the speed of your connection when using one of our VPN servers. We also cover the differences in speed between the ProtonVPN plans. All VPNs establish an encrypted tunnel over your […]

Why do you need Cookies? Chrome If you’re using Chrome, go to Chrome > Preferences and you’ll see a settings menu appear within the browser window. Scroll down and click Show advanced settings… to bring up the privacy options.   Now, click the Content settings button, and then, to enable cookies, click Allow local data to be set (recommended). […]

ProtonVPN uses the latest in web technologies to secure your data, and requires sessionStorage. This article will explain what sessionStorage is and address common issues. What is sessionStorage? sessionStorage is a new web technology that lets you store website information securely on your device. We use sessionStorage to store your authentication token which is […]

If the base filtering engine (BFE) is not running on your Windows device, the ProtonVPN app will show the following error messages: The most likely reason the BFE is not running is that a virus disabled it to perform malicious actions on your device. For ProtonVPN to work properly, you […]

We have been contacted by users reporting that their iPhone is telling them that they are using unexpectedly large amounts of data when using their mobile data plan while connected to ProtonVPN. We have found that the cause of this unexpected data use is an accounting issue with iOS 14. […]

VPN Connection fails due to an authentication failure Symptom: Opening and logging in to the ProtonVPN Android app is successful. However, when you try to connect to a server, the connection fails and returns the error message “User authentication failed”. The Android application logs indicate “AUTH_FAILED”. (You can access your […]