Windows 10 reached EOS (end of support) on October 14, 2025. If you are on Windows 10, see this article.

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I can no longer trust Firefox. Frequently Windows and Tabs fail to restore on start up and seem to be lost forever,

OneTrueFriend

I need help with this as i am losing so many windows and tabs which fail to restore at start up, even though option is ticked. Please help.

''I need help with this as i am losing so many windows and tabs which fail to restore at start up, even though option is ticked. Please help.

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Lets start with you posting a screenshot of the files in your sessionstore-backups folder in your profile folder. In the detailed view showing date timestamp. see screenshots of mine What day did the issue start? Close Firefox to see the sessionstore.jsonlz4 in your profile folder.

Also, what do you have set for Firefox to do when you close the browser? see screenshot I leave the Browser History unchecked so that the session is restored.