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Can't restore previous tab history after updating to version 24

  • 3 respostas
  • 8 têm este problema
  • 5 visualizações
  • Última resposta por deejay007

The restore option "restore previous session" is gray. I tried the instructions on firefox to restore a backup. But I cannot open back up files with Windows 7. Must have to do with the "default" extension. Is there any freeware to solve this problem? I could only find useless promotions from Microsoft partners and unauthorised registrations of my files on e.g. "mybackup" or PCHealthBoost. They advertised to be supposedly free, but are not!

I have not yet reset firefox in order to keep the tabs before installing the new version

Thank you very much beforehand!

The restore option "restore previous session" is gray. I tried the instructions on firefox to restore a backup. But I cannot open back up files with Windows 7. Must have to do with the "default" extension. Is there any freeware to solve this problem? I could only find useless promotions from Microsoft partners and unauthorised registrations of my files on e.g. "mybackup" or PCHealthBoost. They advertised to be supposedly free, but are not! I have not yet reset firefox in order to keep the tabs before installing the new version Thank you very much beforehand!

Todas as respostas (3)

Step 1 would be to salvage your sessionstore files and make backup copies before exiting Firefox or making any other changes.

Open your active Firefox profile folder (personal settings folder) using

Help > Troubleshooting Information > "Show Folder" button

Copy all files that start with sessionstore to a safe location such as your documents folder.

Does the sessionstore.bak file look as though it has a timestamp of your last good session, or something later?

In case you are using "Clear history when Firefox closes":

  • do not clear the Browsing History

Note that clearing "Site Preferences" clears all exceptions for cookies, images, pop-up windows, software installation, and passwords.


You can check the browser.sessionstore.* prefs on the about:config page and reset user set (bold) browser.sessionstore.*prefs to the default value via the right-click context menu to make sure that Session Restore is enabled and working properly.

If you experience one or more of the following problems with Firefox 23+:

  • after a crash, Firefox > History > Restore Previous Session does not restore the last session, but restores the session before that one;
  • YouTube videos always start muted,

then try this:

  1. In the Location bar type about:config and press <Enter>.
  2. In the Search box at the top, type browser.sessionstore.
  3. In the resulting grid, double-click on all lines shown in bold, to set their Status to default.
  4. In particular, verify that browser.sessionstore.resume_from_crash has been set to true.