Troubleshooting and general information

If you are experiencing issues with Adobe Cloud or Microsoft services such as OneDrive or Office 365 while connected to a Proton VPN server on your Windows device, please follow the steps below to resolve your issue: 1. Open the Network and Internet Settings by right-clicking on the network settings […]

Proton VPN supports most popular Internet browsers. However, Proton VPN 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 […]

RivaTuner is an overclocking and hardware monitoring system for Windows devices that is used to enhance GPU performance. At this point, it is outdated, with the last stable version being released in 2009. We have found that if you have RivaTuner installed on your device, Proton VPN will not open. […]

With the massively increasing amount of IP addresses required by the global network each year, IPv4 can no longer meet the demand. That’s why IPv6 was introduced — to allow more unique TCP/IP identifiers to be created for each user. While most of the internet uses the IPv4 protocol, there […]

VPN Connection fails due to an authentication failure Symptom: Opening and logging in to the Proton VPN 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 […]

Is the Proton VPN Android app not automatically reestablishing a VPN connection when Always-On VPN is enabled? Here are the steps you can take to resolve this issue. This problem can occur on some devices because certain phones don’t allow Proton VPN to continue running in the background or use […]

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 you are using an Android device and would like to test new builds of Proton VPN app before they’re released publicly, you can join the Proton VPN Android app beta program. Like our non-beta Android VPN application, the beta is completely free to join and use. You can get […]

Sometimes you need to clear your browser’s cache and cookies in order to access the Proton VPN dashboard (reason include but not limited to, corrupted cache or new version available). Below we describe how to accomplish this in the browser of your choice. Chrome In the upper right-hand corner, select […]