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firefox crashed and all my tabs were blank after i restarted

  • 6 replies
  • 2 have this problem
  • Last reply by jscher2000

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i have had selected 'show my windows and tabs from last time' from 'when firefox starts'. There were almost 18 , 20 tabs saved. Yesterday firefox crased and when i restarted, all the tabs were there but they are blanks now. All my saved tabs are replaced by these blank tabs. there is no address in the url bar and they are just like a new tab when you open one. any help would be greatly appreciated as i had precious data on those tabs. Thanks!! (and by the way, my firefox version is 48.0b10)

All Replies (6)

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Separate Security Issue, please update your Flash 25.0 r0 by removing it with this tool : If you are able to update , please do so. If you use it Reinstall with Flash Player Version: Current Version Step 1: Select Operating System Step 2: Select A Version (Firefox, . . . .) Note: Other software is offered in the download. <Windows Only>

Too old for me to even think of remembering. Firefox updates to version 62.0 tomorrow. You are out of date and a security risk to everyone you come in contact with running out of date browser.

Your browser is to old. 62.0 release tomorrow. It is time to leave the past behind.

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Firefox creates numerous session history files, but because session history is only for the immediately previous session, it is unfortunately too easy to lose it. Could you start by making a backup of your existing session history files? Here's how:

Do not exit Firefox, or if you closed it, don't re-open it.

(1) To open your profile folder...

If Firefox is still running:

You can open your current Firefox settings (AKA Firefox profile) folder using either

  • "3-bar" menu button > "?" Help > Troubleshooting Information
  • (menu bar) Help > Troubleshooting Information
  • type or paste about:support in the address bar and press Enter

In the first table on the page, click the "Open Folder" (or "Show Folder" in older versions) button.

If Firefox is closed:

Type or paste the following into the Windows Run dialog or the system search box and press Enter to launch Windows Explorer:


In that folder, do you see a semi-randomly-named folder? If so, click into it. If you find multiple such folders, find the one that was most recently updated.

(2) Copy out session history files

In your profile folder, double-click into the sessionstore-backups folder. Save all files here to a safe location such as your Documents folder.

(3) What files did you find?

The kinds of files you may find among your sessionstore files in Firefox 55 and earlier are:

  • recovery.js: the windows and tabs in your currently live Firefox session (or, if Firefox crashed at the last shutdown and is still closed, your last session)
  • recovery.bak: a backup copy of recovery.js
  • previous.js: the windows and tabs in your last Firefox session
  • upgrade.js-build_id: the windows and tabs in the Firefox session that was live at the time of your last update

By default, Windows hides the .js extension. To ensure that you are looking at the files I mentioned, you may want to turn off that feature. This article has the steps:

Could you take a look at what you have and the date/time of the various files to see whether you think any of them would have the missing tabs? I have a tool on my website to make the data more readable so you can figure out whether any of the file is useful:

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jscher2000 thanks for your reply. I have followed your suggestions and now the situation is that i opened recovery.js file on your website and pressed the scrounge URLs button. Unfortunately in the session history it is showing, the tabs which went blank are still blank here. Although at the end it is showing tabs which i am using after the blank tabs incident. But the blank tabs are still blank and by clicking the link it goes to a blank 'new tab'. What should i do now?

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Did you check previous.js and any other available files? Those are the only files as far as Firefox is concerned.

Do you make regular backups of your system by any chance?

A possible source of older copies are the restore points created by Windows when it installs updates. You could take a look and see how recent that was.

Accessing Shadow Copies on Windows 7

Open your current Firefox settings (AKA Firefox profile) folder using either

  • "3-bar" menu button > "?" Help > Troubleshooting Information
  • (menu bar) Help > Troubleshooting Information
  • type or paste about:support in the address bar and press Enter

In the first table on the page, on the Profile Folder row, click the "Open Folder" button. This should launch a new window listing various files and folders in Windows Explorer.

Double-click into sessionstore-backups and right-click recovery.js > Properties, then click the Previous Versions tab

Windows should query restore points for older copies of this file, and you can use Copy... to back up the previous one to a safe location such as your Documents folder or Desktop

Then you can test the contents of that file using the Scrounger.

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jscher2000 thanks for your reply. I am really grateful. Yes i did check previous.js. One other file recovery.bak is also present and i have checked that also by visiting your site and using scrounger, but no luck so far. Unfortunately i do not make back up of my system. I have tried the 'previous version restore' option also as you have suggested. There was only one copy available in the previous versions. I replaced it and used Scrounger to open the content, but still no use. The blank sites are still blank and only showing those sites which i used after that incident. Is there anything else that i can do?

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Hi adnantas, recovery.js and recovery.bak and roughly the same, and previous.js was the best shot. A backup was the second best option. After that, you can go through history, but of course that also includes numerous items you closed...