We're calling on all EU-based Mozillians with iOS or iPadOS devices to help us monitor Apple’s new browser choice screens. Join the effort to hold Big Tech to account!

This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

My App Tab will not remain pinned? What am I doing wrong? Is this a security issue? To buttoned up perhaps?

more options

My App Tab will not remain pinned? What am I doing wrong? Is this a security issue? To buttoned up perhaps? We created a pinned Tab for Facebook!

My App Tab will not remain pinned? What am I doing wrong? Is this a security issue? To buttoned up perhaps? We created a pinned Tab for Facebook!

All Replies (2)

more options

App (pinned) tabs and Tab Groups (Panorama) are stored as part of the session data in the file sessionstore.js in the Firefox profile folder.

Make sure that you do not use Delete browsing, search and download history on Firefox to clear the "Browsing History" when Firefox is closed because that prevails and prevents Firefox from opening tabs from the previous session.

more options

Thank you! I do have the system set to clear all history.