Is Tab group sync supported in Firefox version 17.0.1?

I just tried to sync tabs from a desktop pc with Vista-32bit running Firefox version 16 to a 2nd pc with Windows 7-64 bit running Firefox version 17.0.1. It seemed to work ok, except the tab groups from the origin pc never showed up. I had already transferred the bookmarks before trying the sync procedure and I had a few tabs open, but all the sync messages appeared correct.
Is Tab group sync supported in Firefox version 17.0.1?

Hi there. Tab groups are never synced as far as I can tell. But you you can show tabs from other computers in your "history" menu.

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How do I restore my tabs and tab groups after an update to version 36.0?

I work with many tabs when I use Firefox. I keep them ordered in Tab Groups, which helps separate the different kids of work I do and interests I have. I have been using this environment for years. When I started my work today, Firefox updated to v36.0, and the following behaviour was noticed:
1. There is only one tab group when attempting to show Tab Groups in Panorama, as opposed to around a dozen;
2. Normally though the hidden tabs (the tabs in the same group as the startup group and not the default page) don't download content until clicked, the name of the page and icon, if available, will show on the tab. Presently, the tabs show "New Tab" and no icon. There appears, however, to be the number of tabs that exist across all Tab Groups but now are ghosts this one, default Tab Group. I'd have to add, though, I don't count the number of tabs, so I can't be exactly sure. When clicked, there is just a blank page. So it is odd that Firefox knows they are there but cannot simply attach the address to it.
I have tried to restore the following files from my Windows Home Server backup to the AppData\Roaming\Mozilla\Firefox\Profiles\<gobbletygook>.default folder:
1. In the sessionstore-backups folder, I replaced the previous.js, recovery.bak and recovery.js files (not any of the upgrade~) with files from yesterday and from two days before.
When that didn't do anything, I replaced
2. sessionCheckpoints.json
I didn't see any file with a recent date that appeared to be one that I should restore. I should add that I do see hidden files. I thought about restoring the whole lot, but wasn't sure how this would affect the program on v36.0 and the profile files on 35.0.1.
I have deadlines this week and need to immediately restore my environment in order to make those deadlines. I have no list of addresses to my Web pages to work in IE or other. Any help would be very much appreciated.
On a second note, I had been wondering recently whether this tab group environment is a suitable way to maintain my work environment. Occasionally, when opening Panorama, I would get an error saying a script is taking too long, but if I clicked Continue, it would display the groups in a few seconds. I had considered putting all of it in Bookmarks though it would be tedious and more difficult to access and open multiple tabs. In the beginning, I tried Tab Groups thinking it was a simple matter of maintaining a table of addresses (in tabs) with a tab group ID or name. How could that go wrong? Well, it has, so it is obviously more complicated than that, and I didn't realise that upgrades would affect personal data. Should I abondon using tab groups?

With the help of information from user, ptressel, in [https://support.mozilla.org/en-US/questions/1032154#answer-673322 a post here about the existence of sessionstore.js when version 33 was released], I was able to easily recover my tabs and tab groups as follows:
# close Firefox and, perhaps, allow a few seconds (30s?) for any final closing of files;
# check to see if you have a sessionstore.js file in your profile folder, named like the one I documented in my original post above;
# if it is not timestamped prior to the discovery of your problem, open the sessionstore-backups folder;
# check if the recovery.js file is suitably timestamped and, if not, the recovery.bak.
# At this point, you are likely to find that none of them are prior to your problem occuring. If so, open your backups of this folder and go through steps 2-4 to find a file prior to your problem occuring.
# When you find a file, copy it to the root of your current profile folder and name it, "sessionstore.js"
# Open Firefox. Mine opened up as desired.
This is a Windows solution. Sorry I can't comment on other platforms, but I'd bet that as this is just a file copy and renaming, it is likely the same.
For Windows users, you may find you need to sign out and login as an administrator in order to access the backups. You need not logoff your standard account, but do have Firefox closed as described above.
Hope that helps.

The website for adding "sync" to my Firefox version, does not work. Is there another fix for this problem?

I'm trying to sync bookmarks from our laptop to our desktop computer. The laptop is running Firefox 16.0.2 and the desktop has version 3.6.8. On the desktop, under "Tools, Options" there is no selection for "Sync". The desktop is running Windows XP Media Center Edition.
I did try to download a patch from your site, but the download website is no longer working. Is there some other patch you can offer to solve this problem? Can I upgrade the desktop to a newer Firefox version?

The old Firefox Sync extension for older Firefox versions was discontinued by Mozilla over a year ago. Update Firefox.
Firefox app button > Help > Check for Updates
Or download the current release version and install it after you uninstall that old 3.6.8 version.<br />
http://www.mozilla.org/en-US/firefox/fx/#desktop

Using tab groups but Firefox 28.0 crashes and even can not save all tabs in archive recently

Hi. I installed tab groups addon on my firefox 28.0 (firefox portable version) and each group has its tabs. of course. Problem is that Firefox crashes when i work on a group with the tabs and even can not save all tabs in archive as MAFF recently too. When i try to save all tabs in archive as... i choose the name and hit save and wait but after some time this crashes too. Last time i saved all my tabs and groups as MAFF or other file was end of april and since then i can not save them anymore because of the crashing.
I read on the help site to delete Firefox then reinstall ect. to fix problems but I DO NOT want to erase my groups with their tabs as i chose this solution working with group tabs as it would be to hard on my cpu when i use for each group a different browser for example.
Please help me fix this problem with the crashes but without loosing my groups and its tabs as they are all important and do not wish to erase them as i use them all.
Thanks and hope for a soon reply :)

Can you give me your crash reports?
#Enter ''about:crashes'' in the Firefox address bar and press Enter. A Submitted Crash Reports list will appear, similar to the one shown below.
#Copy the '''5''' most recent Report IDs that start with '''bp-''' and paste them into your response here.

Do App Tabs and Tab Groups maintain an active connection with the websites they represent?

I really like the concept behind App Tabs and Tab Groups. I have a few questions, though.
1. Will I use more memory opening a new window or creating a tab group with the same number of tabs? I am addicted to Alt+Tab and am frequently frustrated by tabs because I have to use the mouse (I don't use ctrl+1,2,3 because I can rarely remember where a given tab is in the sequence). I see there is a shortcut to access the panorama view, so maybe tab groups will work for me. It really is down to which method uses up more memory.
2. With tab groups, I assume the websites maintain a live connection until you close a tab or a group. This is not like a fancy shortcut, right? Is the same true of App Tabs? We have an unreliable connection speed and I am wary of keeping all my apps connected through potentially long periods of non-use.
At any given time, it is not uncommon for me to have 5 or 6 tabs open (per window), but if I use App Tabs, it could bump me up to 20 or more. Since a handful of my "apps" periodically update (fb, twitter, email, pandora, etc), I'm not sure it makes sense to keep them all active. Any thoughts/suggestions/recommendations on the subject are welcome.
Thanks!
~KJ

With the help of information from user, ptressel, in [https://support.mozilla.org/en-US/questions/1032154#answer-673322 a post here about the existence of sessionstore.js when version 33 was released], I was able to easily recover my tabs and tab groups as follows:
# close Firefox and, perhaps, allow a few seconds (30s?) for any final closing of files;
# check to see if you have a sessionstore.js file in your profile folder, named like the one I documented in my original post above;
# if it is not timestamped prior to the discovery of your problem, open the sessionstore-backups folder;
# check if the recovery.js file is suitably timestamped and, if not, the recovery.bak.
# At this point, you are likely to find that none of them are prior to your problem occuring. If so, open your backups of this folder and go through steps 2-4 to find a file prior to your problem occuring.
# When you find a file, copy it to the root of your current profile folder and name it, "sessionstore.js"
# Open Firefox. Mine opened up as desired.
This is a Windows solution. Sorry I can't comment on other platforms, but I'd bet that as this is just a file copy and renaming, it is likely the same.
For Windows users, you may find you need to sign out and login as an administrator in order to access the backups. You need not logoff your standard account, but do have Firefox closed as described above.
Hope that helps.

Panorama forgets where I've filed tabs in tab groups

I've been noticing this since last fall in Firefox 4 nightlies.
Let's say I have around 60 tabs. I open Panarama, create some tab groups, then drag my tabs to the group where I want it to live.
Over the course of several Firefox restarts, my filing gets lost so that tabs go back to where they once were.
My profile was made last fall specifically for Firefox 4 -- I shouldn't have to create yet another one. I've deleted all my tab groups, then started from scratch to no avail. I've also tried disabling some add-ons like xmarks and session manager, which I imagine might impact Panorama.
Another approach would be to delete (in the file system) everything Firefox knows about Panorama so that record-keeping starts from scratch. How do I do that?

With the help of information from user, ptressel, in [https://support.mozilla.org/en-US/questions/1032154#answer-673322 a post here about the existence of sessionstore.js when version 33 was released], I was able to easily recover my tabs and tab groups as follows:
# close Firefox and, perhaps, allow a few seconds (30s?) for any final closing of files;
# check to see if you have a sessionstore.js file in your profile folder, named like the one I documented in my original post above;
# if it is not timestamped prior to the discovery of your problem, open the sessionstore-backups folder;
# check if the recovery.js file is suitably timestamped and, if not, the recovery.bak.
# At this point, you are likely to find that none of them are prior to your problem occuring. If so, open your backups of this folder and go through steps 2-4 to find a file prior to your problem occuring.
# When you find a file, copy it to the root of your current profile folder and name it, "sessionstore.js"
# Open Firefox. Mine opened up as desired.
This is a Windows solution. Sorry I can't comment on other platforms, but I'd bet that as this is just a file copy and renaming, it is likely the same.
For Windows users, you may find you need to sign out and login as an administrator in order to access the backups. You need not logoff your standard account, but do have Firefox closed as described above.
Hope that helps.

Why does my currently active tab group change when I close tabs?

I think it's a bug, but I can't figure out where to post a bug report. I use tab groups (Firefox 5.0), and love them. But often, when I close a tab in one group, I get automatically switched to another tab group. More rarely, Firefox rearranges which tabs are in which groups when this happens. This usually seems to happen when I'm on a pinned "App Tab" (Gmail), and then choose to close one of the tabs via clicking its X with the mouse. I currently have 6 tab groups, all but one of which are named.

Bizarre that we've still got this bug and we are already up to FF7, anyone at mozilla care about quality?

Ffox crashed & I accidntlly hit open new sesson instead of restore tabs. Can I get back my tabs and tab groups?

ffox crashed, when the window came up to choose tabs to close, and then restore the remaining tabs, i accidently hit start new session so I lost all tabs and tab groups when the new firefox window opened. In disbelief that this had actually happened, I then closed this new firefox window, and then started firefox again in hopes that it was some sort of fluke, but again it was a new session without any of my old tabs or groups.

Uh oh, you closed and re-opened Firefox. When you start up, Firefox saves your previous session tabs from sessionstore.js to sessionstore.bak, but it's only there until you start up Firefox again, when the backup is replaced. So I don't hold out much hope...
But you could take a look here:
Help > Troubleshooting Information > "Show Folder" button
This will open your currently active Firefox settings folder (AKA Profile folder). If you look for sessionstore files, you should see at least sessionstore.js (current session) and sessionstore.bak (previous session). You may also see other files with numbers appended to the name.
Copy all of today's files to a safe location (e.g., Documents folder). The strategy is to work through them to see whether they contain anything useful.
Keeping your profile folder open, switch over and exit Firefox. Then delete sessionstore.js and rename sessionstore.bak to sessionstore.js. After restarting Firefox, can you restore the earlier session (using either History > Restore Previous Session, or the button on the built-in Firefox home page)?
If that isn't the correct one, did you find any other sessionstore files that might be a bit older? If so, repeat the process. If not, unfortunately, it's gone, and you'll have to use your memory or Firefox History (e.g., Ctrl+Shift+h) to reconstruct the missing session.
There is an extension named Session Manager that lets you save more than just the one previous session. If you can't live without your list of tabs, you might want to look into it: [https://addons.mozilla.org/firefox/addon/session-manager/].

Firefox loses my tabs and tab groups

I closed down my system normally last night. Firefox closed down. When I started up Firefox this morning all of my tabs and tab groups had gone - AGAIN!
Firefox has done this to me several times and I have never been able to recover my tabs and groups by any of the methods described previously. I am currently using FF 29.0.1 on Windows 7 Ultimate. This loss of tabs and groups has happened in exactly this way on several previous occasions over quite a few years with different versions of FF.
My history is still present.
Leading up to this I have noticed that FF 29.0.1 was not faithfully preserving tab states. There have been several tabs where, during a session, I have changed the URL that the tab was pointing to only to find that FF has preserved the original URL for that tab when I have restarted it the next morning.
I have come to suspect that what is happening is:
1) FF saves the tab and groups state in sessionstate.js on close down (and at intervals while running). It creates sessionstore.js with a syntax error in it.
2) On start up FF loads sessionstore.js, hits a syntax error, (silently) decides that it can't use that store and creates a new one, thereby losing all information in the previous sessionstore.js.
When I save the new sessionstore.js as something else, rename sessionstore.bak to sessionstore.bak.js and then double click it to launch it I get an error dialog:
Line: 1
Char: 11
Error: Expected ';'
Code: 800A03Ec
Source: Microsoft JScript compilation error.
Here are the first few characters of the file:
{"windows":[],"selectedWindow":0,"_closedWindows":[{"tabs":[{"entries":[{"url":"http://php.net/",
The frustrating thing is that I (think I) can see data in there relating to my tabs and groups. Because the JS is minified it's almost impossible to extract the data structures in a meaningful way. Because the file is so large (>2.9MB) and the syntax error my code editors can't make any sense of prettifying it so it's very difficult to pull apart.
I question the use of JS for preserving data in this way. There may be performance reasons for using JS. Wouldn't it be better to use something like XML? At least us poor humans would have a chance of eyeballing the data and doing a manual recovery if necessary. Sod it! We could even write a program to load up the tabs ad groups from the XML!
I have wondered about using Firefox Sync for all of my systems. My worry is that a problem on one machine will blow away my settings on all of them. Does anyone have any experience with respect to FF Sync in this respect?
I've preserved copies of my sessionstate.bak (along with the previous one) in the hope that someone may have a way of recovering the tab and group information contained in there.
If anyone has any suggestions about recovering the tab and group information I'd be really glad to hear them. I can't say loudly enough how frustrating it is to keep losing the tabs and groups. Each time it happens it blows away the context of the several jobs that I'm doing at any one time.
Oh. And I'm writing this message using Chrome as my browser.

What have you tried for session recovery so far?
3MB is quite large and may well indicate some corruption. Still, since as you can see it is largely text, you often can extract the URLs. Doing that by hand would be arduous...
I assume you have seen the following links in other threads mentioning data mining techniques to rescue the URLs from the sessionstore.js or sessionstore.bak file:
* Using Firefox's Browser Console (formerly known as Error Console): https://support.mozilla.org/questions/969046#answer-471950
* Using Firefox developer tool "Scratchpad": http://forums.mozillazine.org/viewtopic.php?f=38&t=622036&start=60&p=12098147#p12098147
* Using a third party website: https://firefox-session-restore.herokuapp.com/
Do any of those work on your file(s)?

How do I sync my tab groups onto another computer?

I have many tab groups and many tabs within each one. I want to copy or sync the tab groups onto a second computer.
Can this be done on a Mac? If so, how?

Ok, I finally figured it out.
http://kb.mozillazine.org/Profile_folder_-_Firefox
Mac
Profile folders are in one of these locations:
~/Library/Mozilla/Firefox/Profiles/<profile folder>
~/Library/Application Support/Firefox/Profiles/<profile folder>
The tilde character (~) refers to the current user's Home folder, so ~/Library is the /Macintosh HD/Users/<username>/Library folder.
[edit]
I copied the Profile folder and pasted it in the same location on my second computer. The reason why I couldn't find it before was because the Library folder was hidden. Once I figured out how to reveal it, I was able to copy and paste it.
I hope Tab Groups will be able to sync in FF in the future. Tab groups is a great way to organize all the tabs.

Is there a way to use Sync to restore the windows and tab groups I had on my previous computer?

I recently set up a new computer. Signing into Sync restored my bookmarks but not my Firefox windows and tab groups. I can get a LIST of "Tabs From Other Devices" to show up, but what I want to do is to restore the session from my previous computer. Is it possible to do this with Sync? I thought that this was supposed to be one of the things it was for.

You can copy the sessionstore.js file in the current Firefox profile folder to an USB stick and copy that file to the profile folder on the other computer.
*http://kb.mozillazine.org/sessionstore.js
*https://support.mozilla.org/kb/Recovering+important+data+from+an+old+profile
*http://kb.mozillazine.org/Transferring_data_to_a_new_profile_-_Firefox
You can use this button to go to the currently used Firefox profile folder:
*Help > Troubleshooting Information > Profile Directory: Show Folder (Linux: Open Directory; Mac: Show in Finder)

In one Firefox window both the "+" sign to add another tab and tab groups symbol have dissappeared. Can't access tab groups nor add tabs anymore.

Both are present in other windows I have open inside of Firefox.
Software OS X 10.8.4 (12E55)
FF: version 22.0
All new tabs open in a different window than the one with missing tab groups and "+"-sign even when generated from this window. Closing open tabs does not help.

This could be a problem with an extension that you have installed.<br>
Run Firefox in Safe Mode and see if the problem still occurs.
[https://support.mozilla.org/en-US/kb/troubleshoot-firefox-issues-using-safe-mode?esab=a&s=safe+mode&r=1&as=s About Firefox Safe Mode]

What happened to my tabs and tab groups when I synced to a new computer?

I have spent the morning trying to sync Firefox. On my previous computer, I was running FF31, but not as a clean install--as an upgrade from FF28. In the Sync screen, I saw my email address and recovery key, so I thought I was good to go.
Turns out that that wasn't the case, and I needed to set up a new Sync account.
Here are the steps I took to get my data back:
1) I uninstalled FF31, reverted to 28, used my email address and recovery key, and got my information back.
2) Then I updated to FF31.
3) In FF31, I unlinked my computer, created a new Sync account, and logged in to sync my data.
However, I was unable to access my tab groups. And when I upgraded to FF31, my tab groups still weren't back.
I tried looking in "Tabs from Other Devices", and there were no other devices listed.
How can I get my tabs and tab groups back? I had literally dozens of hours of work-related research saved in these tabs. I have so many visited sites in my history that there's no way I'd be able to recreate all of them.
Please help--I'm desperate. I can't lose all of those tabs.

Hello,
'''Try Firefox Safe Mode''' to see if the problem goes away. [[Troubleshoot Firefox issues using Safe Mode|Firefox Safe Mode]] is a troubleshooting mode that turns off some settings, disables most add-ons (extensions and themes).
If Firefox is open, you can restart in Firefox Safe Mode from the Help menu:
*In Firefox 29.0 and above, click the menu button [[Image:New Fx Menu]], click Help [[Image:Help-29]] and select ''Restart with Add-ons Disabled''.
*In previous Firefox versions, click on the Firefox button at the top left of the Firefox window and click on ''Help'' (or click on ''Help'' in the Menu bar, if you don't have a Firefox button) then click on ''Restart with Add-ons Disabled''.
If Firefox is not running, you can start Firefox in Safe Mode as follows:
* On Windows: Hold the '''Shift''' key when you open the Firefox desktop or Start menu shortcut.
* On Mac: Hold the '''option''' key while starting Firefox.
* On Linux: Quit Firefox, go to your Terminal and run ''firefox -safe-mode'' <br>(you may need to specify the Firefox installation path e.g. /usr/lib/firefox)
When the Firefox Safe Mode window appears, select "Start in Safe Mode".<br>
[[Image:Safe Mode Fx 15 - Win]]
'''''If the issue is not present in Firefox Safe Mode''''', your problem is probably caused by an extension, and you need to figure out which one. Please follow the [[Troubleshoot extensions, themes and hardware acceleration issues to solve common Firefox problems]] article to find the cause.
''To exit Firefox Safe Mode, just close Firefox and wait a few seconds before opening Firefox for normal use again.''
When you figure out what's causing your issues, please let us know. It might help others with the same problem.

Sync does not work for tabs nor for tab groups.

I have sync account. I have a laptop and my main computer added there. Each time I click the "sync now" button on my laptop, only the bookmarks and addons sync! My tabs don't change nor do I get the tab groups that I have on my main computer.

The tabs won't open instantly as you click on sync. To access them, go to History -> Tabs from other Computers. Or in a new tab, type 'about:sync-tabs' in the address bar. (Assuming the [https://support.mozilla.org/en-US/kb/how-do-i-manage-my-firefox-sync-account#w_how-do-i-select-the-data-that-i-want-to-sync_2 sync settings] are correct).

The + to add a tab is mising and I have no access to the tab grouping. I just downloaded Firefox to a new Win 7 computer.

I am using a brand new Win 7 computer. I downloaded Firefox expecting it would be just the same as my previous version-8.?
I have no + on the tab bar to add a new tab.
Additionally, I loved the tabbed grouping and used it a lot. The set of boxes in the upper right corner to access the grouping page isn't even there.
To make sure I was getting Firefox without problems, I downloaded it from Firefox. The first time I downloaded it with Google Chrome. I am familiar with the games MS Wins plays with Mozilla.
Can you help me?

Hi jb4long,
You should try starting Firefox in Safe Mode by holding down shift while it is starting. Then you should choose to disable all the add-ons and use the default theme. That should put things back in order.
You might also want to take a look at [https://support.mozilla.org/en-US/kb/how-do-i-customize-toolbars this article on customizing the toolbar]. You can put the Tab Groups icon in your toolbar or you can access it by hitting ''CTRL + SHIFT + E''
Hopefully this helps!

Is Tab group sync supported in Firefox version 17.0.1?

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