ProtonMail works tirelessly to ensure your secure email works seamlessly with as many browsers as possible. Your specific browser may be the reason why you are seeing an error while using ProtonMail. Please complete all applicable steps prior to contacting ProtonMail support. The following steps are designed to help you get back to running ProtonMail error free as quickly as possible.
Desktop and Mobile
- Refresh your browser.
- Close the current tab and open a new one.
- Log in to your ProtonMail account under Private browsing mode on your browser.
- Log in through a different browser.
- Clean cache and cookies.
- Temporarily disable content blocking software (i.e. Disconnect, Purify, ect.), learn more here: https://protonmail.com/support/knowledge-base/protonmail-mobile-app-troubleshooting-guide/