If you’re still having trouble logging in, please try logging in through the Private or Incognito (new window) mode of your browser (Safari excluded) or deactivating all extensions. Learn more about how to clear your cache and delete cookies (new window) Disable browser extensions To fix this, try clearing your browser cache and then restarting the browser. Sometimes, problems are caused by a corrupted browser cache. See the browsers supported and recommended by Proton Mail (new window) Clear browser cache and restart browser Internet Explorer versions prior to 11 and Safari versions prior to 6 do not support Proton Mail’s cryptography library. If this solves the login problem for you, please contact us to report this bug (new window) so we can make Proton Mail compatible with your original browser. If it is the latest version, please try logging in on a different browser to see if that fixes the login problem. If you’re having trouble with your current web browser, please make sure it is updated to the latest version (new window). Proton Mail does not work with Safari’s Private Browsing because it disables certain browser technologies we require.

This is the default mode on some devices.

If you’re using Apple’s Safari browswer, make sure it’s not set to Private Browsing (new window). See our list of officially supported password managers (new window) Disable Private Browsing (Safari) You can submit a bug report here (new window). If this works, please file a bug report with us describing your password manager and computer so that we can make them work with Proton Mail. If you are using a password manager, please try disabling it for Proton Mail and manually enter the password. Not all password managers (new window) support our service, especially if you are in two-password mode. Below is a list of common problems you may encounter while logging into your Proton Account and solutions to fix them.

Proton mail account