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I pin several urls as appabs, when I close firefox and reopen it they're gone, what am I doing wrong?

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pin several app tabs, they work fine for the session, if I close firefox and reopen it they're gone, what am I doing wrong?

Thanks,

Paul

pin several app tabs, they work fine for the session, if I close firefox and reopen it they're gone, what am I doing wrong? Thanks, Paul

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App (pinned) tabs and Tab Groups (Panorama) are stored as part of the session data [1] in the file sessionstore.js [2] in the Firefox profile folder [3].

Make sure that you do not use "Clear Recent History" to clear the "Browsing History" when Firefox is closed because that prevails and prevents Firefox from opening tabs from the previous session.

It is also possible to use the "Show my windows and tabs from last time" setting, that is usually a more reliable way to restore session data.