We're calling on all EU-based Mozillians with iOS or iPadOS devices to help us monitor Apple’s new browser choice screens. Join the effort to hold Big Tech to account!

搜索 | 用户支持

防范以用户支持为名的诈骗。我们绝对不会要求您拨打电话或发送短信,及提供任何个人信息。请使用“举报滥用”选项报告涉及违规的行为。

详细了解

Recover Session button does nothing

  • 3 个回答
  • 1 人有此问题
  • 9 次查看
  • 最后回复者为 cor-el

more options

Hi. Mac has crashed (as this POS is wont to), and now when FF 36.0 opens I see my session list that I can supposedly recover. When I select a session that crashed and click recover, however, nothing happens - the windows disappears and Firefox just has one tab, one window, with the start page. What gives?

Hi. Mac has crashed (as this POS is wont to), and now when FF 36.0 opens I see my session list that I can supposedly recover. When I select a session that crashed and click recover, however, nothing happens - the windows disappears and Firefox just has one tab, one window, with the start page. What gives?

所有回复 (3)

more options

I don't know what happened but I suggest...

First: Do not exit Firefox and if Firefox is closed, do not start Firefox.

Please back up your session history files to a safe location for potential recovery/salvage operations.

If Firefox is 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/Return

In the first table on the page, click the "Show in Finder" button.

In the window that launches, scroll down and double-click into the sessionstore-backups folder. Save all files here to a safe location, such as your Documents folder or Desktop. If not too much time has passed, we may be able to use them to recover your lost tabs.

If Firefox is not running:

Check this article for how to find your profile folder and sessionstore-backups folder: Profiles - Where Firefox stores your bookmarks, passwords and other user data. Also look for sessionstore.js at the main level of the profile folder (not inside sessionstore-backups).


The kinds of files you may find among your sessionstore files are:

  • sessionstore.js: the windows and tabs from the immediately previous session that shut down normally
  • recovery.js: the windows and tabs in your currently live Firefox session (or, if Firefox crashed, your last session)
  • recovery.bak: a backup copy of recovery.js from 15 seconds or more earlier
  • 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?

more options

Oh wait, are you using the Session Manager extension? It may have its own separate stash of session history files. I'm not familiar with how that works.

more options

Note that Firefox 36 isn't the current release and using that release make you vulnerable to security flaws.

You can find the full version of the current Firefox release (42.0) in all languages and all operating systems here: