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Can't restore a recently closed window

  • 5 replies
  • 1 has this problem
  • 207 views
  • Last reply by McCoy

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I've been using two windows lately, each containing several important tabs. Yesterday I opened a couple of extra windows and when I restarted, only one of my main windows was available to restore from the History menu.

I immediately backed up my Firefox profile folder.

Things I tried which didn't work:

• I changed the about:config to show more than 3 previous windows, but the window didn't appear.

• I found a bunch of backups in the sessionstore-backups folder, I took one from a few days ago (titled upgrade.jsonlz4), I copied it into the main folder and renamed it to sessionstore.js, but when I started Firefox, it just loaded the windows and tabs from the previous session.

Modified by MartyJames

Chosen solution

You need to preserve the jsonlz4 file extension, so rename upgrade.jsonlz4 to sessionstore.jsonlz4

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All Replies (5)

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Did you use the search bar in the History Manager?

if you need to rescue any data from session store. You can try to read out their contents using this tool: https://www.jeffersonscher.com/res/scrounger.html

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The search bar in History Manager? If you mean the History toolbar, surely that would only allow me to search for a particular page I've visited, rather than a lost window session?

As for that tool, that's a good suggestion, but personally I would not want to upload the details of my tabs to any website.

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Chosen Solution

You need to preserve the jsonlz4 file extension, so rename upgrade.jsonlz4 to sessionstore.jsonlz4

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The scrounger.html tool works locally. so no data is uploaded to the internet. Jefferson Scher is a contributor active at this forum.

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@ MartyJames :

With this thread in mind :

https://support.mozilla.org/en-US/questions/1255873

Would you be so kind as to mark cor-el's post as
Chosen Solution  ?

Thank you in advance  !