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Undo Close Tab not working

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I am using Firefox 28, and either hitting the key combo CTRL+SHIFT+T, or right clicking on the tabs section and choosing "Undo Close Tab" do not work. I have restarted Firefox in Safe mode, with the same result. I have also uninstalled and reinstalled Firefox with no fix to this problem. I am not using Tab Mix Plus. Under about:config, both browser.sessionstore.max_tabs_undo browser.sessionstore.max_windows_undo are set to default values. Is there another config file or any other option that may control this setting..?

Thanks.

I am using Firefox 28, and either hitting the key combo CTRL+SHIFT+T, or right clicking on the tabs section and choosing "Undo Close Tab" do not work. I have restarted Firefox in Safe mode, with the same result. I have also uninstalled and reinstalled Firefox with no fix to this problem. I am not using Tab Mix Plus. Under about:config, both browser.sessionstore.max_tabs_undo browser.sessionstore.max_windows_undo are set to default values. Is there another config file or any other option that may control this setting..? Thanks.

Additional System Details

Installed Plug-ins

  • Next Generation Java Plug-in 10.55.2 for Mozilla browsers
  • NPRuntime Script Plug-in Library for Java(TM) Deploy
  • Shockwave Flash 13.0 r0
  • Adobe Shockwave for Director Netscape plug-in, version 12.1
  • 5.1.30214.0
  • Adobe PDF Plug-In For Firefox and Netscape 11.0.06
  • Adobe PDF Plug-In For Firefox and Netscape "9.5.5"
  • The plug-in allows you to open and edit files using Microsoft Office applications
  • Office Authorization plug-in for NPAPI browsers

Application

  • Firefox 28.0
  • User Agent: Mozilla/5.0 (Windows NT 6.1; rv:28.0) Gecko/20100101 Firefox/28.0
  • Support URL: https://support.mozilla.org/1/firefox/28.0/WINNT/en-US/

Extensions

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  • Troubleshooter 1.1a (troubleshooter@mozilla.org)
  • Zotero 4.0.19 (zotero@chnm.gmu.edu)
  • Zotero Word for Windows Integration 3.1.15 (zoteroWinWordIntegration@zotero.org)
  • Trend Micro NSC Firefox Extension 5.82.0.1069 ({22C7F6C6-8D67-4534-92B5-529A0EC09405}) (Inactive)

Javascript

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Graphics

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Modified Preferences

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Misc

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  • Accessibility: No
Diego Victor 658 solutions 4175 answers

Try create a new perfil or reset Firefox:

Try create a new perfil or reset Firefox: *[https://support.mozilla.org/kb/profile-manager-create-and-remove-firefox-profiles Create a new profile] *[https://support.mozilla.org/kb/reset-firefox-easily-fix-most-problems Reset Firefox]
cor-el
  • Top 10 Contributor
  • Moderator
17467 solutions 157849 answers

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


You can check for problems with the sessionstore.js and sessionstore.bak files in the Firefox profile folder that store session data.

Rename (or delete) the sessionstore.js file and possible sessionstore-##.js files with a number and sessionstore.bak in the Firefox profile folder.

Deleting sessionstore.js will cause App Tabs and Tab Groups and open and closed (undo) tabs to get lost and you will have to recreate them (make a note or bookmark them if possible).

You can check <b>browser.sessionstore.*</b> prefs including browser.sessionstore.resume_from_crash on the <b>about:config</b> page and reset browser.sessionstore prefs that are user set (bold) via the right-click context menu to the default value to make sure that Session Restore is enabled and working properly. *http://kb.mozillazine.org/Session_Restore *https://support.mozilla.org/kb/restore-previous-session *http://kb.mozillazine.org/browser.sessionstore.resume_from_crash ---- You can check for problems with the sessionstore.js and sessionstore.bak files in the Firefox profile folder that store session data. Rename (or delete) the sessionstore.js file and possible sessionstore-##.js files with a number and sessionstore.bak in the Firefox profile folder. *Help > Troubleshooting Information > Profile Directory: Show Folder (Linux: Open Directory; Mac: Show in Finder) *http://kb.mozillazine.org/Profile_folder_-_Firefox *http://kb.mozillazine.org/Multiple_profile_files_created Deleting sessionstore.js will cause App Tabs and Tab Groups and open and closed (undo) tabs to get lost and you will have to recreate them (make a note or bookmark them if possible).

Question owner

Thanks for replying! Diego Victor, I tried Resetting Firefox. After the reset I still had the same problems. I haven't tried creating a new profile yet, but it's next on my list.

cor-el, all of my browser.sessionstore.* prefs are set to the defaults, I'm not sure how to be certain that they are working properly past this. I followed your instructions for finding my Firefox profile folder and renamed the sessionstore.js file, then started up firefox. After all of this the problem still persists!

Interestingly, the administrator of this machine (this is a work machine) logged into the admin account and verified that "Undo Close Tab" worked for him in that account. I've now reset Firefox, and all my extensions are no longer present, yet I'm still having this issue. Are there some other defaults I can modify or something else I can check, or should I just go ahead and have firefox completely removed and reinstalled on this machine? Would that be the best bet to fix the problem if some profile information is causing this? Might this be related to history or privacy settings (which I don't believe that I have changed)?

Thanks.

Thanks for replying! Diego Victor, I tried Resetting Firefox. After the reset I still had the same problems. I haven't tried creating a new profile yet, but it's next on my list. cor-el, all of my browser.sessionstore.* prefs are set to the defaults, I'm not sure how to be certain that they are working properly past this. I followed your instructions for finding my Firefox profile folder and renamed the sessionstore.js file, then started up firefox. After all of this the problem still persists! Interestingly, the administrator of this machine (this is a work machine) logged into the admin account and verified that "Undo Close Tab" worked for him in that account. I've now reset Firefox, and all my extensions are no longer present, yet I'm still having this issue. Are there some other defaults I can modify or something else I can check, or should I just go ahead and have firefox completely removed and reinstalled on this machine? Would that be the best bet to fix the problem if some profile information is causing this? Might this be related to history or privacy settings (which I don't believe that I have changed)? Thanks.
cor-el
  • Top 10 Contributor
  • Moderator
17467 solutions 157849 answers

It would be best to use the Profile Manager to create a new profile if there are issues with files that are preserved via a reset (cookies, open tab are among those). In such a case you can never be sure that the issue isn't carried over via a reset.

On Windows there is also a high chance that security or other software is interfering with files in the Firefox profile folder, so make sure to disable all such features in this software that might corrupt files in the profile folder.

Boot the computer in Windows Safe Mode with network support (press F8 on the boot screen) as a test.

It would be best to use the Profile Manager to create a new profile if there are issues with files that are preserved via a reset (cookies, open tab are among those). In such a case you can never be sure that the issue isn't carried over via a reset. On Windows there is also a high chance that security or other software is interfering with files in the Firefox profile folder, so make sure to disable all such features in this software that might corrupt files in the profile folder. Boot the computer in Windows Safe Mode with network support (press F8 on the boot screen) as a test. *http://www.bleepingcomputer.com/tutorials/how-to-start-windows-in-safe-mode/

Modified by cor-el