Recent answers to Previous windows and tabs at startup, and historyhttps://support.mozilla.org/fa/questions/13652942022-01-21T05:56:02-08:00Make sure you are not using Private Windows (nothing is recorded).
You may have corrupt sessionstore2022-01-21T05:56:02-08:00fredmcd-hotmailhttps://support.mozilla.org/fa/questions/1365294#answer-1476790<p>Make sure you are not using Private Windows (nothing is recorded).
</p><p>You may have corrupt <strong>sessionstore</strong> [v56] <strong>sessionstore.jsonlz4</strong> file(s).
Delete all <strong>sessionstore*</strong> files and the <strong>sessionstore-backups</strong> folder.
</p><p><strong>Don't delete the files</strong> if you need to rescue any data from
them, just move them out of the profile folder to some
location where Firefox doesn't look for them. You can
try to read out their contents using this tool:
<a href="https://www.jeffersonscher.com/res/scrounger.html" rel="nofollow">https://www.jeffersonscher.com/res/scrounger.html</a>
</p><p><br>
Type <strong>about:support</strong>&lt;enter&gt; in the address box.
</p><p>Under the page logo on the left side, you will see
<strong>Application Basics. </strong> Under this find <strong>Profile Folder. </strong>
To its right press the button <strong>Show Folder. </strong> This will
open your file browser to the current
Firefox profile. Now <strong>Close Firefox. </strong>
</p><p>Windows: Show Folder; Linux: Open Directory; Mac: Show in Finder
</p><p><strong>Linux: </strong> Under the page logo on the left side,
you will see <strong>Application Basics.</strong> Under this find
<strong>Profile Directory. </strong> To its right press the button
<strong>Open Directory. </strong>
</p><p>Locate the above file. Then rename or delete it.
Restart Firefox.
</p>