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Settings misunderstanding

  • 1 回覆
  • 1 有這個問題
  • 8 次檢視
  • 最近回覆由 cor-el

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I've had 4 different Firefox windows for months now or even more than a year. I use two monitors and I use lots of tabs. It has been easier for me until now to organize like that. I have 3 Firefox windows on my main monitor - one of them has like 10 tabs open. The other has 5. And the third one had maybe around 100. On the other monitor I have the last 4th Firefox window that has around 500 tabs open. I do this all the time where I get to a point in which I review them all in a day or two, filtrate thru the content I saved thru this method and after that reset the browser. So today I started this cleaning process with the 3rd window that had over 100 tabs. Was going great when suddenly I clicked the X button on the whole window and without any warning it instantly closed. I restarted the computer and nothing happened. All my information from over 100 tabs now gone forever and honestly this might sound funny to you but I'm literally having a panic attack right now having difficulties breathing. Before when it happened at times that I click the close button on these windows it always asked me a warning message if I want to close the window with these X tabs. No matter if the tabs are 10, 100 or 800. Always. No matter how many windows I have opened with different tabs in them. I immediately checked my settings and I see that "Confirm before closing multiple tabs" wasn't turned on which like NO WAY IN HELL did I go in the settings menu and turned that thing off. I haven't been in the settings menu since I installed firefox on this PC which was after I got my Windows OS like 2 years ago. And as I said I remember multiple times in these past months where I clicked the close button and it asks me if I want to close these X multiple tabs. So I dunno how that happened. Also I had the "Open previous windows and tabs" TURNED ON but that also didn't work apparently for some reason. So I'm not really sure what question I want to ask here, I guess I want some explanation why these things happened when clearly they shouldn't have and it wasn't my fault/mistake (from my point of view considering the facts). And also if there is any way to restore that window with the closed tabs.

I've had 4 different Firefox windows for months now or even more than a year. I use two monitors and I use lots of tabs. It has been easier for me until now to organize like that. I have 3 Firefox windows on my main monitor - one of them has like 10 tabs open. The other has 5. And the third one had maybe around 100. On the other monitor I have the last 4th Firefox window that has around 500 tabs open. I do this all the time where I get to a point in which I review them all in a day or two, filtrate thru the content I saved thru this method and after that reset the browser. So today I started this cleaning process with the 3rd window that had over 100 tabs. Was going great when suddenly I clicked the X button on the whole window and without any warning it instantly closed. I restarted the computer and nothing happened. All my information from over 100 tabs now gone forever and honestly this might sound funny to you but I'm literally having a panic attack right now having difficulties breathing. Before when it happened at times that I click the close button on these windows it always asked me a warning message if I want to close the window with these X tabs. No matter if the tabs are 10, 100 or 800. Always. No matter how many windows I have opened with different tabs in them. I immediately checked my settings and I see that "Confirm before closing multiple tabs" wasn't turned on which like NO WAY IN HELL did I go in the settings menu and turned that thing off. I haven't been in the settings menu since I installed firefox on this PC which was after I got my Windows OS like 2 years ago. And as I said I remember multiple times in these past months where I clicked the close button and it asks me if I want to close these X multiple tabs. So I dunno how that happened. Also I had the "Open previous windows and tabs" TURNED ON but that also didn't work apparently for some reason. So I'm not really sure what question I want to ask here, I guess I want some explanation why these things happened when clearly they shouldn't have and it wasn't my fault/mistake (from my point of view considering the facts). And also if there is any way to restore that window with the closed tabs.

被選擇的解決方法

The default for "Confirm before closing multiple tabs" got changed in Firefox 94 (bug 1724976), so you are no longer being warned unless you check this setting again.

You can check the sessionstore-backups folder for a recent upgrade.jsonlz4-<build_id> that should have those tabs.

You can look at this tool to inspect a compressed sessionstore file.


You will normally find these files in the sessionstore-backups folder:

  • previous.jsonlz4 (cleanBackup: copy of sessionstore.jsonlz4 from previous session that was loaded successfully)
  • recovery.jsonlz4 (latest version of sessionstore.jsonlz4 written during runtime)
  • recovery.baklz4 (previous version of sessionstore.jsonlz4 written during runtime)
  • upgrade.jsonlz4-<build_id> (backup created during an upgrade of Firefox)

You can copy a file from the sessionstore-backups folder to the main profile and rename the file to sessionstore.jsonlz4 to replace the current file with Firefox closed.

  • make sure to backup the current sessionstore.jsonlz4

You can use the button on the "Help -> More Troubleshooting Information" (about:support) page to go to the current Firefox profile folder or use the about:profiles page (Root directory).

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選擇的解決方法

The default for "Confirm before closing multiple tabs" got changed in Firefox 94 (bug 1724976), so you are no longer being warned unless you check this setting again.

You can check the sessionstore-backups folder for a recent upgrade.jsonlz4-<build_id> that should have those tabs.

You can look at this tool to inspect a compressed sessionstore file.


You will normally find these files in the sessionstore-backups folder:

  • previous.jsonlz4 (cleanBackup: copy of sessionstore.jsonlz4 from previous session that was loaded successfully)
  • recovery.jsonlz4 (latest version of sessionstore.jsonlz4 written during runtime)
  • recovery.baklz4 (previous version of sessionstore.jsonlz4 written during runtime)
  • upgrade.jsonlz4-<build_id> (backup created during an upgrade of Firefox)

You can copy a file from the sessionstore-backups folder to the main profile and rename the file to sessionstore.jsonlz4 to replace the current file with Firefox closed.

  • make sure to backup the current sessionstore.jsonlz4

You can use the button on the "Help -> More Troubleshooting Information" (about:support) page to go to the current Firefox profile folder or use the about:profiles page (Root directory).