Hi there,

When Firefox is set to run in private browsing mode it completely prevents our extension from being able to write files into Firefox's local storage, which is a requirement in order for the extension to be able to establish your 1Password account and your database in the browser.

You can still open and use private browsing windows manually, which will allow you to enjoy both worlds - you can enjoy a more private and secure browsing session, while still having 1Password operational in your browser 😊

If you have any questions, we’d love to elaborate. Please drop an email to support@1password.com and we’ll be happy to help.