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When using a firewall or antivirus software, it might be causing a blockage for your VPN client. This clears the memory cache and stops any code that isn’t working correctly, letting the VPN start fresh. Like many technical issues, the “VPN Authentication Failed” error can sometimes be solved by rebooting your device. Sometimes, the simplest solutions are the best. These are just a handful of reasons, all of which are simple to fix so you can get connected and protected as soon as possible. Your WiFi connection isn’t stable enough to support your VPN.There are too many simultaneous device connections.Your VPN software download is corrupted or out of date.Your antivirus software or firewall is blocking your connection.There are a few reasons you may encounter a VPN authentication error, including: In this case, I recommend you get a high-quality VPN like ExpressVPN as this will reduce the chance you’ll see any service errors.Īvoid annoying errors with ExpressVPN 12 Ways To Fix VPN Authentication Errors (Tested in 2024) If these methods don’t work for you, you likely have an issue with your VPN provider. Just work through each method listed below to restore access to your VPN. I’ve discovered multiple ways to fix a VPN authentication error that you can try for yourself. Fortunately, it’s an easy issue to fix, and usually takes just a couple of minutes to resolve by tweaking some settings. Getting a “VPN authentication failed” error message is frustrating, as you can’t access your VPN account and secure your devices. We do not review all VPN providers and information is believed to be accurate as of the date of each article. The rankings and reviews we publish may also take into consideration the common ownership mentioned above, and affiliate commissions we earn for purchases through links on our website. The reviews published on Wizcase are believed to be accurate as of the date of each article, and written according to our strict reviewing standards that prioritize the independent, professional and honest examination of the reviewer, taking into account the technical capabilities and qualities of the product together with its commercial value for users. Today, our team of hundreds of cybersecurity researchers, writers, and editors continues to help readers fight for their online freedom in partnership with Kape Technologies PLC, which also owns the following products: ExpressVPN, CyberGhost and Private Internet Access which may be ranked and reviewed on this website. Wizcase was established in 2018 as an independent site reviewing VPN services and covering privacy-related stories. Best Parental Control for iPhone & iPad.IPVanish VPN vs Private Internet Access.