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How do I restore my tabs and windows, whether open or closed, when everything else fails?

This is not so much a question, as an answer that some people desperately need. Ever since Version 34, Firefox has done a superb job of restoring the tabs that the user h… (read more)

This is not so much a question, as an answer that some people desperately need.

Ever since Version 34, Firefox has done a superb job of restoring the tabs that the user has created, either on restarting Firefox (if that option is chosen) or on request.

The details of how to restore tabs are covered in Firefox's basic help online, and even how to deal with several crashes in a row (such as in an addon) ruin the normal backup file are also well explained.

However, today I accidentally pressed Alt+F4 twice on my poorly-designed keyboard and closed my main window, with 93 tabs, and another Firefox window as well. I'm not sure this is exactly what happened, but I lost all 93 of my tabs.

I read many of the postings in which people give various suggestions, but none worked. Every time I restored a version of the sessionstore.js file I saw the same lonely empty tab. Restoring prefs.js did nothing, and neither did making changes in the internal configuration constants.

I tried refreshing/resetting Firefox (which preserves bookmarks), but I still couldn't restore the tabs. It was now clear that the problem was in sessionstore.js (and all its backups) for sure.

I'm writing this for people who must restore their windows or tabs, and don't mind getting technical about it. That was my situation.

The solution was to realize that the sessionstore.js file contains JSON code, which is an efficient way to represent integers and strings arranged in a tree structure.

I figured there must be a JSON editor somewhere, and it turns out there is a great one available online, at www.jsoneditoronline.org . It can read a file on your computer, edit it, then save it back on your computer.

As soon as I viewed sessionstore.js in the editor, it was obvious how easy this was going to be. The top level of the tree is understandable. I simply grabbed the data representing the window with 93 tabs, and dragged it from the list of closed Firefox windows to the list of open windows. This automatically moved the history of each tab, and even the strings entered into forms.

After copying sessionstore.js back to the Firefox profile, I started Firefox one more time. The playing of Pandora signalled that my tabs were back and functioning once again.

Now, editing JSON code is not something that everyone is ready for. And your problem might not be reflected in the JSON tree so simply. But, for technical-minded people who don't want to lose their tabs or windows to a mistake or a crash, this technique can be just what's needed when everything else fails.

Asked by David Spector 5 years ago

Answered by FredMcD 5 years ago

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Do you know that RAM oxidation can cause youtube playback problems? I've just fixed my problems by cleaning my ram sticks!

I was sure that the new firefox 40 was the problem. To make it worse in chrome the videos were not lagging at all, but when I restarted my computer it failed to restart p… (read more)

I was sure that the new firefox 40 was the problem. To make it worse in chrome the videos were not lagging at all, but when I restarted my computer it failed to restart properly. I saw this kind of problems with ram sticks before so I said to give it a try. The sticks were very hot and one of them showed signs of oxidation. I've cleaned them with a eraser and now the computer works great again.

I have 4gb ddr2 800 adata vitesta in 4x1gb sticks.

Asked by brioalex 4 years ago

Answered by FredMcD 4 years ago

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Firefox Cut-and-Paste not working, found solution in a FEBE AddOn setting

This is not technically a PROBLEM per se , but hopefully more of a possible SOLUTION for a general problem, for some users anyway. I had been fighting a problem with Fir… (read more)

This is not technically a PROBLEM per se , but hopefully more of a possible SOLUTION for a general problem, for some users anyway.

I had been fighting a problem with FireFox updates (I thought) having disabled my Cut-and-Paste ability from practically any webpage to my word processing products (like "Microsoft's Word"). The Cut-and-Paste feature would work if pasted to Window's Notepad, but not to Word. After lots of searching, I found (by accident) a feature in the Environment Backup Extension (FEBE) AddOn feature for Firefox to be causing the problem (for me). Using the "about:config" feature, I searched for "clipboard". I then reset (toggled) the "extensions.febe.copyToClipboard" from "false" to "true". The problem went away. I don't know what issue this may be affecting in the AddOn, but I can do more without FEBE than I can Cut-and-Paste not working.

edited by a moderator to remove the line indentation which messed up page formatting

Asked by dstout49 4 years ago

Answered by FredMcD 4 years ago

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Firefox slow after windows 10 installation: solution

I have has this problem for ages and have been cursing all and sundry. However I have found an article that has fixed it for me. It turns out that during the upgrade to W… (read more)

I have has this problem for ages and have been cursing all and sundry.

However I have found an article that has fixed it for me.

It turns out that during the upgrade to Windows 10 my Power settings were changed from balanced to stable. I reset the power saver settings back to Balanced (recommended) and now Firefox is back to it's original speed.

Videos play without buffereing now and no annoying waiting for script message

Yeahhhhhhhhhhh

Asked by LarryB2 4 years ago

Last reply by gopego 4 years ago

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No sound or audio in flash.

I have: Firefox 38.0.5 Shockwave Flash 18.0.0.160 Problem is that when I watch a video that is NOT in youtube, there seems to be no sound. This happens on sites such as: … (read more)

I have: Firefox 38.0.5 Shockwave Flash 18.0.0.160

Problem is that when I watch a video that is NOT in youtube, there seems to be no sound. This happens on sites such as: twitch.com kissanime.com (In this site the have the option to play videos in HTML5, which works fine) and website with flash games like: kongregate.com

Asked by Cypherial 4 years ago

Answered by Cypherial 4 years ago