Recent answers to in preferences, the option to open all tabs from previous session does NOT work..i've tried many ways...is this a permanent glitch?https://support.mozilla.org/km/questions/13109352020-10-30T02:09:00-07:00In case you use "Clear history when Firefox closes".
do not clear the Browsing History
Options/Pre2020-10-30T02:09:00-07:00cor-elhttps://support.mozilla.org/km/questions/1310935#answer-1362603<p>In case you use "Clear history when Firefox closes".
</p>
<ul><li>do not clear the Browsing History
</li></ul>
<ul><li>Options/Preferences -&gt; Privacy &amp; Security<br>Firefox will: "Use custom settings for history":<br>[X] "Clear history when Firefox closes" -&gt; Settings
</li><li><a href="https://support.mozilla.org/en-US/kb/delete-browsing-search-download-history-firefox" rel="nofollow">https://support.mozilla.org/en-US/kb/delete-browsing-search-download-history-firefox</a>
</li></ul>
<ul><li>clearing "Site Preferences" clears exceptions for cookies, images, pop-up windows, and software installation and exceptions for passwords and other website specific data
</li><li>clearing "Cookies" will remove all selected cookies including cookies with an allow exception you may want to keep
</li></ul>You may have corrupt sessionstore [v56] sessionstore.jsonlz4 file(s).
Delete all sessionstore* file2020-10-30T02:01:14-07:00fredmcd-hotmailhttps://support.mozilla.org/km/questions/1310935#answer-1362599<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>Type <strong>about:support</strong>&lt;enter&gt; in the address bar.
</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><p><br>
<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>