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I can't get back a bunch of tabs I lost yesterday. Any idea how to restart and regain tabs? thanks!
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First: Do not exit Firefox, or if you closed it, don't re-open it.
If Firefox is still up, check the History menu for "Restore Previous Session" and, if it's not grayed out, try that.
Then check the menu for recently closed windows and tabs to see whether any of those are what you're looking for.
If that doesn't help, let's back up a few files. Here's how:
(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 > "?" button > 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 "Show Folder" 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, scroll down and double-click into the sessionstore-backups folder. Save all files here to a safe location, such as your Documents folder. If not too much time has passed, we may be able to use them to recover your lost tabs.
(3) What files did you find?
The kinds of files you may find among your sessionstore files 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
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?
Note: 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: http://windows.microsoft.com/en-us/windows/show-hide-file-name-extensions