본 사이트는 여러분의 사용자 경험을 개선하기 위해 유지 보수를 진행하는 동안 기능이 제한됩니다. 도움말로 문제가 해결되지 않고 질문을 하고 싶다면 Twitter의 @FirefoxSupport 및 Reddit의 /r/firefox 채널을 활용하세요.

Mozilla 도움말 검색

고객 지원 사기를 피하세요. 저희는 여러분께 절대로 전화를 걸거나 문자를 보내거나 개인 정보를 공유하도록 요청하지 않습니다. "악용 사례 신고"옵션을 사용하여 의심스러운 활동을 신고해 주세요.

자세히 살펴보기

Restore tabs

more options

Firefox fails, I restarted it and I saw "Restore session tab", but before I clicked on "Ok" in this tab was loaded new site page from one of addons (it is updated, wow happy news) and I can't go back to Restore tab, and menu item Go->Restore session is disabled. How I can restore my previous session? Why FF not block "Restore session tab"?

Firefox fails, I restarted it and I saw "Restore session tab", but before I clicked on "Ok" in this tab was loaded new site page from one of addons (it is updated, wow happy news) and I can't go back to Restore tab, and menu item Go->Restore session is disabled. How I can restore my previous session? Why FF not block "Restore session tab"?

선택된 해결법

If you check your History menu (either using the "3-bar" menu button of the classic Menu Bar, if you display that), is Restore Previous Session available? You might also check whether there are any closed windows available to restore.


Before closing Firefox, please back up your session history files to a safe location for potential recovery/salvage operations.

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.

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. We may be able to use them to recover your lost tabs.


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 is 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

You might also find files Firefox created if it could not update recovery.js (but since Firefox 33 is so new, I don't know what they would be named).

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 window?

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

문맥에 따라 이 답변을 읽어주세요 👍 3

모든 댓글 (2)

more options

선택된 해결법

If you check your History menu (either using the "3-bar" menu button of the classic Menu Bar, if you display that), is Restore Previous Session available? You might also check whether there are any closed windows available to restore.


Before closing Firefox, please back up your session history files to a safe location for potential recovery/salvage operations.

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.

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. We may be able to use them to recover your lost tabs.


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 is 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

You might also find files Firefox created if it could not update recovery.js (but since Firefox 33 is so new, I don't know what they would be named).

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 window?

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

more options

By default, pages that open automatically should open in a new tab and not replace the contents of an existing tab.

Or if you switched off the tabbed browsing setting in the Options dialog, it might open in a new window instead.

Firefox does have a hidden setting that allows you to load external links in an existing tab, but most likely you haven't set that, and I'm not sure it would affect where add-on pages open.