Firefox SYNC 1.4.4 website error or ??

HI,
I am running Firefox 3.6.8 on a Win 7 machine and just added Firefox Sync to it.
I also have a Vista machine running Firefox 3.6.8 BUT when I try to install SYNC the website says I am running 3.0.14 and will not load SYNC 1.4.4.
Why is the website reading my Firefox wrongly?
Thank you.

Your user agent string which identifies the version of Firefox you are using is this:
Mozilla/5.0 (Windows; U; Windows NT 6.0; en-US; rv:1.9.0.14) Gecko/2009082707 Firefox/3.0.14 (.NET CLR 3.5.30729)
That is a user agent for Firefox 3.0.14, are you sure you do not have 3.0.14?
Some add-ons will change parts of the user agent string. Typically they change the part containing the Firefox version number, they do not normally change the parts such as the Gecko date or build number, both of which for your user agent string are those of Firefox 3.0.14
The Firefox 3.6.8 user agent string is like this one:
Mozilla/5.0 (Windows; U; Windows NT 6.0; en-US; rv:1.9.2.8) Gecko/20100722 Firefox/3.6.8
All the indications are that you have Firefox 3.0.14, but if you are certain that you have Firefox 3.6.8, you can reset the user agent string. For details see [[websites or add-ons incorrectly report incompatible browser]]. An

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I have followed ALL instructions for Firefox Sync and keep getting "Unexpected Error" when I try to log in on desktop.

1) have refreshed Firefox - doesn't help
2) have uninstalled and reinstalled Firefox - doesn't help
3) have updated ALL other machines to current version Firefox - they are syncing fine, doesn't help this machine
Any suggestions?

No. I cannot log into an account. I cannot create a new account. I cannot Sync anything. I get the same sequence of events on two different machines: 1) I enter my info and hit return, 2) the little circle spins like something is happening, 3) within 10-15 seconds a red bar appears that says "Working", and 4) within another 10-15 seconds the red bar reads "Unexpected Error."
This same sequence also happens on a BRAND NEW laptop I just brought home from work yesterday and installed Firefox for the first time.
Could this be something with my home network settings?
p.s. I am the question originator... somehow in the process of implementing previous suggestions my old profile was deleted
********************** UPDATE at 12:57pm Thursday
This HAS to be something with my network settings at home. I am now at the office where Sync is working just fine on my work desktop and the BRAND NEW work laptop where I was getting the error messages when I tried this at home.
Any suggestions on where to look?

Firefox-Sync (Weave) encounters an unknown Error (partially fails to sync)

The log from $PROFILE/weave/logs/error-1231312123.txt says:
1334133797561 Sync.Store.Forms WARN Failed to apply incoming record /justAnCrypticId
1334133797562 Sync.Store.Forms WARN Encountered exception: Component returned failure code: 0x80004005 (NS_ERROR_FAILURE) [mozIStorageConnection.beginTransaction]
Stack trace: resource:///components/nsFormHistory.js:253
FormStore_remove()@resource:///modules/services-sync/engines/forms.js:264
Store_applyIncoming()@resource://services-sync/engines.js:273
applyIncoming()@resource:///modules/services-sync/engines/forms.js:218
applyIncomingBatch()@resource://services-sync/engines.js:243
resource:///modules/services-sync/engines/forms.js:213
resource://services-sync/util.js:168
applyIncomingBatch()@resource:///modules/services-sync/engines/forms.js:214
doApplyBatch()@resource://services-sync/engines.js:795
doApplyBatchAndPersistFailed()@resource://services-sync/engines.js:810
SyncEngine__processIncoming()@resource://services-sync/engines.js:910
SyncEngine__sync()@resource://services-sync/engines.js:1320
WrappedNotify()@resource://services-sync/util.js:148
Engine_sync()@resource://services-sync/engines.js:517
WeaveSvc__syncEngine()@resource:///modules/services-sync/service.js:1496
resource:///modules/services-sync/service.js:1389
WrappedNotify()@resource://services-sync/util.js:148
WrappedLock()@resource://services-sync/util.js:103
_lockedSync()@resource:///modules/services-sync/service.js:1289
resource:///modules/services-sync/service.js:1280
WrappedCatch()@resource://services-sync/util.js:77
sync()@resource:///modules/services-sync/service.js:1268
1334133797563 Sync.Engine.Forms WARN Got exception Component returned failure code: 0x8000ffff (NS_ERROR_UNEXPECTED) [mozIStorageConnection.commitTransaction]
Stack trace: resource://services-sync/util.js:171
applyIncomingBatch()@resource:///modules/services-sync/engines/forms.js:214
doApplyBatch()@resource://services-sync/engines.js:795
doApplyBatchAndPersistFailed()@resource://services-sync/engines.js:810
SyncEngine__processIncoming()@resource://services-sync/engines.js:910
SyncEngine__sync()@resource://services-sync/engines.js:1320
WrappedNotify()@resource://services-sync/util.js:148
Engine_sync()@resource://services-sync/engines.js:517
WeaveSvc__syncEngine()@resource:///modules/services-sync/service.js:1496
resource:///modules/services-sync/service.js:1389
WrappedNotify()@resource://services-sync/util.js:148
WrappedLock()@resource://services-sync/util.js:103
_lockedSync()@resource:///modules/services-sync/service.js:1289
resource:///modules/services-sync/service.js:1280
WrappedCatch()@resource://services-sync/util.js:77
sync()@resource:///modules/services-sync/service.js:1268, aborting processIncoming.
1334133797566 Sync.Status DEBUG Status for engine forms: error.engine.reason.unknown_fail
1334133797566 Sync.Status DEBUG Status.service: success.status_ok => error.sync.failed_partial
1334133797566 Sync.ErrorHandler DEBUG forms failed: Component returned failure code: 0x8000ffff (NS_ERROR_UNEXPECTED) [mozIStorageConnection.commitTransaction]
Stack trace: resource://services-sync/util.js:171
applyIncomingBatch()@resource:///modules/services-sync/engines/forms.js:214
doApplyBatch()@resource://services-sync/engines.js:795
doApplyBatchAndPersistFailed()@resource://services-sync/engines.js:810
SyncEngine__processIncoming()@resource://services-sync/engines.js:910
SyncEngine__sync()@resource://services-sync/engines.js:1320
WrappedNotify()@resource://services-sync/util.js:148
Engine_sync()@resource://services-sync/engines.js:517
WeaveSvc__syncEngine()@resource:///modules/services-sync/service.js:1496
resource:///modules/services-sync/service.js:1389
WrappedNotify()@resource://services-sync/util.js:148
WrappedLock()@resource://services-sync/util.js:103
_lockedSync()@resource:///modules/services-sync/service.js:1289
resource:///modules/services-sync/service.js:1280
WrappedCatch()@resource://services-sync/util.js:77
sync()@resource:///modules/services-sync/service.js:1268

I have the same issue with the nightly and aurora versions. Firefox 11 works fine.

Firefox sync gives me an unknown error when attempting to sync.

I am trying to sync Firefox 4 between two different windows machines. I set up a sync account on one, and then add the other computer as another device. As many times as I try this, only one computer will sync, and the other give me the error: Sync encountered an error while syncing: Unknown error. Sync will automatically retry this action. I have had no luck resolving this and would love some advice.

I have the same issue with the nightly and aurora versions. Firefox 11 works fine.

Can't get firefox sync to work. I keep getting 'Error While Syncing' message

I am on Mac OS X 10.6.4, Snow Leopard on a Mini Mac a year old.
I got a message from X Marks telling me they were shutting down.
As I use my bookmarks every day and have thousands of them all sorted into folders I definitely never want to lose them or lose access to them if my house burns down or my computer is stolen!
I was using Firefox 3.6 and followed X Marks advise and downloaded Firefox Sync...but...won't work....kept giving me the 'Error While Syncing' message after trying to sync for a while. I looked at the blog and tried a few things like resetting password, restarting computer, checking my setting etc., but no deal. So, as the Firefox Sync download page told me that if I was using Firefox 4 beta the feature was built in and I didn't need the download, I then downloaded Firefox 4....which has removed my X Marks option, which was at least viable till after Xmas! and I still have the 'Error While Syncing' message beside the Sync button on my status bar....so now I am completely at a loss. The only thing I can do if I can't fix it up is go back to 3.6 and go on using X Marks while it is still available and pray that you get this sorted out before they dissappear.
I also like to be able to get my updated bookmarks on the other browsers I use, like Chrome and IE, so I would really appreciate it if you would include this cross browser sync capability as soon as you can. I have pledged X Marks that I would even pay for their service to continue as it seems they are so ahead of anyone else in their service and it is a large pain in the you know where that they can't keep going.
Thanks. and I hope you can help. From the blogs it seems that I am not the only one having this problem of getting the Firefox Sync working

@globaltruth
Thank you for your suggestion. I tried it. Unfortunately, the error message still sits on my statusbar, right after the Firefox Sync image.

Firefox sync getting an error while syncing

I my previous profile was corrupt and not working, so I recently created a new profile and logged it into my sync account. Everything seemed fine at first, but towards the end of the day I started getting the error message at the bottom of the screen that sync was encountering an error while syncing.
Below is some of the error message I am seeing in the log file:
1413469133871 Sync.Tracker.Clients WARN Changed IDs file clients contains non-object value.
1413469133874 Sync.Tracker.Bookmarks WARN Changed IDs file bookmarks contains non-object value.
1413469133875 Sync.Tracker.Forms WARN Changed IDs file forms contains non-object value.
1413469133876 Sync.Tracker.History WARN Changed IDs file history contains non-object value.
1413469133876 Sync.Tracker.Passwords WARN Changed IDs file passwords contains non-object value.
1413469133878 Sync.Tracker.Addons WARN Changed IDs file addons contains non-object value.
1413469153872 Sync.Engine.Bookmarks WARN Got exception "[Exception... "Component returned failure code: 0x804b000a (NS_ERROR_MALFORMED_URI) [nsINavBookmarksService.getBookmarkURI]" nsresult: "0x804b000a (NS_ERROR_MALFORMED_URI)" location: "JS frame :: resource://gre/modules/services-sync/engines/bookmarks.js :: _buildGUIDMap :: line 248" data: no] Stack trace: _buildGUIDMap()@resource://gre/modules/services-sync/engines/bookmarks.js:248 < _syncStart/<()@resource://gre/modules/services-sync/engines/bookmarks.js:375 < _mapDupe()@resource://gre/modules/services-sync/engines/bookmarks.js:315 < _createRecord()@resource://gre/modules/services-sync/engines/bookmarks.js:415 < SyncEngine.prototype._uploadOutgoing()@resource://services-sync/engines.js:1412 < SyncEngine.prototype._sync()@resource://services-sync/engines.js:1483 < wrappedSync()@resource://gre/modules/services-sync/engines/bookmarks.js:214 < _sync()@resource://gre/modules/services-sync/engines/bookmarks.js:211 < WrappedNotify()@resource://services-sync/util.js:141 < Engine.prototype.sync()@resource://services-sync/engines.js:655 < _syncEngine()@resource://services-sync/stages/enginesync.js:199 < sync()@resource://services-sync/stages/enginesync.js:149 < onNotify()@resource://gre/modules/services-sync/service.js:1271 < WrappedNotify()@resource://services-sync/util.js:141 < WrappedLock()@resource://services-sync/util.js:96 < _lockedSync()@resource://gre/modules/services-sync/service.js:1261 < sync/<()@resource://gre/modules/services-sync/service.js:1253 < WrappedCatch()@resource://services-sync/util.js:70 < sync()@resource://gre/modules/services-sync/service.js:1241 < <file:unknown>" building GUID map. Skipping all other incoming items.
1413469153872 Sync.Engine.Bookmarks WARN Error creating record: [object Object] No traceback available
1413469175317 Sync.Store.Addons DEBUG {9340fd57-678b-6966-a297-90692d7f5959} not syncable: type not in whitelist: plugin

Okay, I have just cleared all my history and I am still getting the error. When I have "history" unselected this computer syncs up fine, with it selected I get the error. Is there some additional information that can help narrow down what is causing the problem.
I current sync 3 machines to this account, a Mac, an Android Phone and a Windows 8 PC. Below is the log file as it stands now.
1414009958358 Sync.ErrorHandler DEBUG Flushing file log.
1414009958361 Sync.Status DEBUG Status.service: error.sync.failed_partial => success.status_ok
1414009958362 Sync.Status DEBUG Status.service: success.status_ok => success.status_ok
1414009958362 Sync.ErrorHandler DEBUG Log cleanup threshold time: 1413145958362
1414009958366 Sync.ErrorHandler DEBUG No logs to clean up.
1414009958932 Sync.Tracker.Clients DEBUG Saving changed IDs to clients
1414009958937 Sync.Tracker.Bookmarks DEBUG Saving changed IDs to bookmarks
1414009958940 Sync.Tracker.Forms DEBUG Saving changed IDs to forms
1414009958944 Sync.Tracker.Passwords DEBUG Saving changed IDs to passwords
1414009959356 Sync.Tracker.Addons DEBUG Saving changed IDs to addons
1414010051089 Sync.Status DEBUG Status.service: success.status_ok => success.status_ok
1414010051090 Sync.ErrorHandler DEBUG Beginning user-triggered sync.
1414010051090 Sync.Service DEBUG User-Agent: Firefox/33.0 FxSync/1.35.0.20141011015303.
1414010051090 Sync.Service INFO Starting sync at 2014-10-22 16:34:11
1414010051091 Sync.SyncScheduler DEBUG Clearing sync triggers and the global score.
1414010051091 Sync.Status INFO Resetting Status.
1414010051091 Sync.Status DEBUG Status.service: success.status_ok => success.status_ok
1414010051092 Sync.BrowserIDManager DEBUG _ensureValidToken already has one
1414010051951 Sync.Resource DEBUG mesg: GET success 200 https://sync-148-us-west-2.sync.services.mozilla.com/1.5/10925754/info/collections
1414010051951 Sync.Resource DEBUG GET success 200 https://sync-148-us-west-2.sync.services.mozilla.com/1.5/10925754/info/collections
1414010051952 Sync.Service DEBUG Fetching global metadata record
1414010051952 Sync.Service DEBUG Weave Version: 1.35.0 Local Storage: 5 Remote Storage: 5
1414010051953 Sync.Service INFO Sync key is up-to-date: no need to upgrade.
1414010051953 Sync.Service DEBUG Fetching and verifying -- or generating -- symmetric keys.
1414010051953 Sync.Service INFO Testing info/collections: {"passwords":1414009530.47,"tabs":1414009530.7,"clients":1414009158.6,"crypto":1413468730.08,"forms":1414009217.94,"meta":1414009226.95,"prefs":1414009115.93,"bookmarks":1413938103.18,"addons":1413934492.81}
1414010051953 Sync.CollectionKeyManager INFO Testing for updateNeeded. Last modified: 1413468730.08
1414010051953 Sync.Synchronizer DEBUG Refreshing client list.
1414010051954 Sync.Engine.Clients INFO 0 outgoing items pre-reconciliation
1414010051955 Sync.Engine.Clients INFO Records: 0 applied, 0 successfully, 0 failed to apply, 0 newly failed to apply, 0 reconciled.
1414010051956 Sync.Synchronizer INFO Updating enabled engines: 1 clients.
1414010051960 Sync.Engine.Bookmarks INFO 0 outgoing items pre-reconciliation
1414010051962 Sync.Engine.Bookmarks INFO Records: 0 applied, 0 successfully, 0 failed to apply, 0 newly failed to apply, 0 reconciled.
1414010051965 Sync.Engine.Forms INFO 0 outgoing items pre-reconciliation
1414010051966 Sync.Engine.Forms INFO Records: 0 applied, 0 successfully, 0 failed to apply, 0 newly failed to apply, 0 reconciled.
1414010051967 Sync.Engine.History DEBUG First sync, uploading all items
1414010051968 Sync.Status DEBUG Status for engine history: error.engine.reason.unknown_fail
1414010051968 Sync.Status DEBUG Status.service: success.status_ok => error.sync.failed_partial
1414010051968 Sync.ErrorHandler DEBUG history failed: database disk image is malformed No traceback available
1414010051969 Sync.Engine.Passwords INFO 0 outgoing items pre-reconciliation
1414010051971 Sync.Engine.Passwords INFO Records: 0 applied, 0 successfully, 0 failed to apply, 0 newly failed to apply, 0 reconciled.
1414010051972 Sync.Engine.Prefs INFO 0 outgoing items pre-reconciliation
1414010051973 Sync.Engine.Prefs INFO Records: 0 applied, 0 successfully, 0 failed to apply, 0 newly failed to apply, 0 reconciled.
1414010051974 Sync.Engine.Tabs INFO 1 outgoing items pre-reconciliation
1414010051976 Sync.Engine.Tabs INFO Records: 0 applied, 0 successfully, 0 failed to apply, 0 newly failed to apply, 0 reconciled.
1414010051986 Sync.Engine.Tabs INFO Uploading all of 1 records
1414010051986 Sync.BrowserIDManager DEBUG _ensureValidToken already has one
1414010051987 Sync.Collection DEBUG POST Length: 1872
1414010052149 Sync.Collection DEBUG mesg: POST success 200 https://sync-148-us-west-2.sync.services.mozilla.com/1.5/10925754/storage/tabs
1414010052149 Sync.Collection DEBUG POST success 200 https://sync-148-us-west-2.sync.services.mozilla.com/1.5/10925754/storage/tabs
1414010052151 Sync.Engine.Addons DEBUG Refreshing reconciler state
1414010052151 Sync.AddonsReconciler INFO Refreshing global state from AddonManager.
1414010052156 Sync.AddonsReconciler DEBUG Rectifying state for addon: {972ce4c6-7e08-4474-a285-3208198ce6fd}
1414010052156 Sync.AddonsReconciler DEBUG Rectifying state for addon: [email protected]
1414010052156 Sync.AddonsReconciler DEBUG Rectifying state for addon: [email protected]
1414010052157 Sync.AddonsReconciler DEBUG Rectifying state for addon: [email protected]
1414010052157 Sync.AddonsReconciler DEBUG Rectifying state for addon: {b9db16a4-6edc-47ec-a1f4-b86292ed211d}
1414010052157 Sync.AddonsReconciler DEBUG Rectifying state for addon: [email protected]
1414010052157 Sync.AddonsReconciler DEBUG Rectifying state for addon: [email protected]
1414010052157 Sync.AddonsReconciler DEBUG Rectifying state for addon: [email protected]
1414010052157 Sync.AddonsReconciler DEBUG Rectifying state for addon: gmp-gmpopenh264
1414010052157 Sync.AddonsReconciler DEBUG Rectifying state for addon: {10c68f07-63a6-4653-8f43-9fc763f22443}
1414010052158 Sync.AddonsReconciler DEBUG Rectifying state for addon: {9340fd57-678b-6966-a297-90692d7f5959}
1414010052158 Sync.AddonsReconciler DEBUG Rectifying state for addon: {07331244-d8fe-048f-bc78-d7a5feba72ea}
1414010052163 Sync.AddonsReconciler DEBUG Rectifying state for addon: {b0abad6a-59ad-ab23-b4cf-b9093349a0ed}
1414010052163 Sync.AddonsReconciler DEBUG Rectifying state for addon: {485a038e-7a17-bd3a-fd40-46fdaa916094}
1414010052164 Sync.AddonsReconciler DEBUG Rectifying state for addon: {89f74af3-3543-ba77-f985-6019007a9781}
1414010052164 Sync.AddonsReconciler DEBUG Rectifying state for addon: {b66dbe14-6371-dba9-8f63-f2031cfa3a40}
1414010052164 Sync.AddonsReconciler DEBUG Rectifying state for addon: {6b496cd3-2299-120d-2bbf-fb5bcadf19e6}
1414010052165 Sync.AddonsReconciler DEBUG Rectifying state for addon: {74f60b82-12ef-8704-7114-2802023b9f97}
1414010052165 Sync.AddonsReconciler DEBUG Rectifying state for addon: {d44b47cc-9165-5b44-5841-a92d500ccae5}
1414010052165 Sync.AddonsReconciler DEBUG Rectifying state for addon: {b4a46c11-2945-5c38-9640-940aeb02e416}
1414010052165 Sync.AddonsReconciler DEBUG Rectifying state for addon: {37ab856c-b575-a4b5-33b2-9adc43f4ad10}
1414010052165 Sync.AddonsReconciler DEBUG Rectifying state for addon: {fed0ab6f-7546-a733-dc0d-a155df78f538}
1414010052167 Sync.AddonsReconciler INFO Saving reconciler state to file: addonsreconciler
1414010052180 Sync.Engine.Addons INFO 0 outgoing items pre-reconciliation
1414010052181 Sync.Engine.Addons INFO Records: 0 applied, 0 successfully, 0 failed to apply, 0 newly failed to apply, 0 reconciled.
1414010052182 Sync.Synchronizer INFO Sync completed at 2014-10-22 16:34:12 after 1.09 secs.
1414010052182 Sync.Declined DEBUG Handling remote declined: []
1414010052182 Sync.Declined DEBUG Handling local declined: []
1414010052183 Sync.Declined DEBUG Declined changed? false
1414010052183 Sync.Service INFO No change to declined engines. Not reuploading meta/global.
1414010052183 Sync.SyncScheduler DEBUG Next sync in 3600000 ms.
1414010052184 Sync.ErrorHandler DEBUG Some engines did not sync correctly.

Unknown error when trying to set up Firefox Sync

I try to set up Firefox Sync but as I fill in my e-mail address on the first line i first get the message "invalide e-mail account" (or similar) but then when I continue to complete it with [email protected] it just says "unknown error". I have tried several different e-mail addresses on two different computers but the same annoying unknown error message keeps coming up.
What am I supposed to do about that?

Many site issues can be caused by corrupt cookies or cache. In order to try to fix these problems, the first step is to clear both cookies and the cache.
Note: ''This will temporarily log you out of all sites you're logged in to.''
To clear cache and cookies do the following:
#Go to Firefox > History > Clear recent history or (if no Firefox button is shown) go to Tools > Clear recent history.
#Under "Time range to clear", select "Everything".
#Now, click the arrow next to Details to toggle the Details list active.
#From the details list, check ''Cache'' and ''Cookies'' and uncheck everything else.
#Now click the ''Clear now'' button.
Further information can be found in the [[Clear your cache, history and other personal information in Firefox]] article.
Did this fix your problems? Please report back to us!

Unexpected error when trying to reset Firefox sync

Hello,
I am trying to reset my password for Firefox sync with no success. When i enter my email address and hit "next" i get "Unexpected error". I don't want to create a new account with a different email address.
Any help is appreciated.

Hello jc_denton,
The Reset Firefox feature can fix many issues by restoring Firefox to its factory default state while saving your bookmarks, history, passwords, cookies, and other essential information.
'''''Note:''' After resetting Firefox, you will lose any extensions, toolbar customizations, and some preferences.'' See the [[Reset Firefox – easily fix most problems]] article for more information.
To Reset Firefox:
# Open the Troubleshooting Information page using one of these methods:
#*Click the menu button [[Image:New Fx Menu]], click help [[Image:Help-29]] and select ''Troubleshooting Information''. A new tab containing your troubleshooting information should open.
#*If you're unable to access the Help menu, type '''about:support''' in your address bar to bring up the Troubleshooting Information page.
#At the top right corner of the page, you should see a button that says "Reset Firefox" that looks like this: [[Image:Button reset]]. Click on it.
#Firefox will close and reset. After it is done, Firefox will show a window with the information that is imported.
#Click Finish and Firefox will reopen.
Did this fix the problem? Please report back to us!
Thank you.

Firefox sync: unknown error while syncing

Has anyone gotten firefox sync to work with firefox from [extra]? I can connect but I always get an unknown error when trying to actually sync. When running in a terminal no output is given.
Any advice?

Hm that's weird, everything work fine here both on Arch and XP.
According to this site http://www.neowin.net/forum/topic/942916-firefox-sync/ possibly is bug
Oh btw, take a look at your sync log, open new empty tab then
about:sync-log
Anyone here have same issue?

Firefox Sync Unknown Error?

Over the last few weeks of having to reinstall my OS, I've had major problems getting Firefox Sync to do its thing and synchronise a couple of years worth of data. After a few minutes, I am receiving the following error at the bottom of the page: "Sync encountered an error while synchronising: Unknown error. Sync will automatically retry this action." Which is not particularly helpful in solving the problem!
As there are no tools provided to edit data "in the cloud", there is also no way I can see to remedy this by deleting any corrupt entries. Which does not seem very promising option to me for backing up this data, some of which is very important!
Firstly, I was wondering if anyone else has been receiving this error? And secondly, I was wondering if there was any way of manually downloading the data outside of Firefox if there isn't a remedy? I would really not like to use the nuclear option and reset my account. If it is possible to get it back then I'll be able to make a safe backup and transfer my information to xmarks, which I have found is more reliable. I guess you could argue I should be making backups like these in the first place if this information is so important, but I trusted the convenience and reliability of Mozilla to handle my data, especially as before Weave came along I had never realised how valuable keeping my history between computers can be!
I am having this problem between Mac, Ubuntu and Windows versions of Firefox 4. Hope you can understand my frustrations.

This worked for me:
# In Firefox menu: go to bookmarks -> Organize bookmarks. Take there a bakup of your bookmarks. to stay on the safe side for your bookmarks.
# Go to the sync tab in your firefox preferences (edit -> preferences)
Uncheck everything except passwords and close.
# Do a sync by double clicking the sync in the status bar (bottom of firefox)
# Go back to the sync tab and reenable one by one what you need, doing a sync in between.

Firefox Sync "encounters an unknown error" since upgrading to Firefox 4

I've already tried resetting Sync on both desktops, I even went through "adding a device" on each one to add them back but still I just get the "Sync encountered an error while syncing: Unknown error. Sync will automatically retry this action."
I'm really disappointed that an advertised feature of Firefox 4 should be giving me this much trouble when I had none with earlier versions.
Windows 7 x64 and Windows 7 x32, Firefox 4.

If you don't mind losing your synced data: Use "Deactivate This Device" option then "Setup Firefox Sync"->"Connect" -> "I don't have the device with me"-> Enter your Account and Password information and click on "I have lost my other device"->"Change Your Sync Key" pop-up windows should open, if not click on "I have lost my other device" again ->"Change Sync Key" Setup Complete window will appear, Finish, OK.
Change Sync Options when the option first appears or after setup is complete.
'''Warning''': Backup your saved bookmarks, passwords before trying this.
Also read: http://support.mozilla.com/sr-LATN/questions/777875

Firefox sync encountered an error while syncing

For the past week or so I've been getting an error bar at the bottom of Firefox stating "Sync encountered an error while syncing: Unknown error. Sync will automatically retry this action." If I click the Server Status button it says the server is working fine. I've tried resetting Firefox, no good. I've also tried removing this machine from my sync account, deleting places.sqlite and readding it to sync, also no good. Log is below:
1406993413879 Sync.ErrorHandler DEBUG Flushing file log.
1406993413915 Sync.Status DEBUG Status.service: error.sync.failed_partial => success.status_ok
1406993413928 Sync.Status DEBUG Status.service: success.status_ok => success.status_ok
1406993414016 Sync.ErrorHandler DEBUG Log cleanup threshold time: 1406129414016
1406993414024 Sync.ErrorHandler DEBUG No logs to clean up.
1406993414874 Sync.Tracker.Forms DEBUG Saving changed IDs to forms
1406995020966 Sync.Service DEBUG User-Agent: Firefox/31.0 FxSync/1.33.0.20140716183446.
1406995020966 Sync.Service INFO Starting sync at 2014-08-02 11:57:00
1406995020968 Sync.SyncScheduler DEBUG Clearing sync triggers and the global score.
1406995020970 Sync.Status INFO Resetting Status.
1406995020970 Sync.Status DEBUG Status.service: success.status_ok => success.status_ok
1406995020971 Sync.BrowserIDManager INFO Fetching assertion and token from: https://token.services.mozilla.com/1.0/sync/1.5
1406995020971 FirefoxAccounts DEBUG already verified
1406995020972 Sync.BrowserIDManager DEBUG Getting an assertion
1406995020972 FirefoxAccounts DEBUG enter getAssertion()
1406995020974 FirefoxAccounts DEBUG getKeyPair: already have a keyPair
1406995020974 FirefoxAccounts DEBUG getCertificate already had one
1406995020974 FirefoxAccounts DEBUG getAssertionFromCert
1406995020976 FirefoxAccounts DEBUG getAssertionFromCert returning signed: true
1406995020976 Sync.BrowserIDManager DEBUG Getting a token
1406995021376 Sync.BrowserIDManager DEBUG Successfully got a sync token
1406995024961 Sync.Resource DEBUG mesg: GET success 200 https://sync-40-us-west-2.sync.services.mozilla.com/1.5/1804547/info/collections
1406995024961 Sync.Resource DEBUG GET success 200 https://sync-40-us-west-2.sync.services.mozilla.com/1.5/1804547/info/collections
1406995024962 Sync.Service DEBUG Fetching global metadata record
1406995024962 Sync.Service DEBUG Weave Version: 1.33.0 Local Storage: 5 Remote Storage: 5
1406995024962 Sync.Service INFO Sync key is up-to-date: no need to upgrade.
1406995024962 Sync.Service DEBUG Fetching and verifying -- or generating -- symmetric keys.
1406995024962 Sync.Service INFO Testing info/collections: {"passwords":1406679822.79,"tabs":1406959263.08,"clients":1406991311.66,"crypto":1400889147.85,"forms":1406919932.16,"meta":1406753141.68,"prefs":1406941219.82,"bookmarks":1406943828.39,"addons":1405605432.73,"history":1406959259.3}
1406995024962 Sync.CollectionKeyManager INFO Testing for updateNeeded. Last modified: 1400889147.85
1406995024962 Sync.Synchronizer DEBUG Refreshing client list.
1406995024962 Sync.Engine.Clients INFO 0 outgoing items pre-reconciliation
1406995024963 Sync.Engine.Clients INFO Records: 0 applied, 0 successfully, 0 failed to apply, 0 newly failed to apply, 0 reconciled.
1406995024963 Sync.Synchronizer INFO Updating enabled engines: 5 clients.
1406995024964 Sync.Engine.Bookmarks INFO 0 outgoing items pre-reconciliation
1406995024966 Sync.Engine.Bookmarks INFO Records: 0 applied, 0 successfully, 0 failed to apply, 0 newly failed to apply, 0 reconciled.
1406995024968 Sync.Engine.Forms INFO 1014 outgoing items pre-reconciliation
1406995024969 Sync.Engine.Forms INFO Records: 0 applied, 0 successfully, 0 failed to apply, 0 newly failed to apply, 0 reconciled.
1406995025069 Sync.Engine.Forms INFO Uploading 0 - 100 out of 1014 records
1406995025070 Sync.BrowserIDManager DEBUG _ensureValidToken already has one
1406995025071 Sync.Collection DEBUG POST Length: 31377
1406995025962 Sync.Tracker.Clients DEBUG Saving changed IDs to clients
1406995025965 Sync.Tracker.Bookmarks DEBUG Saving changed IDs to bookmarks
1406995025969 Sync.Tracker.Forms DEBUG Saving changed IDs to forms
1406995077964 Sync.Collection DEBUG mesg: POST success 200 https://sync-40-us-west-2.sync.services.mozilla.com/1.5/1804547/storage/forms
1406995077964 Sync.Collection DEBUG POST success 200 https://sync-40-us-west-2.sync.services.mozilla.com/1.5/1804547/storage/forms
1406995077966 Sync.Engine.Forms DEBUG Records that will be uploaded again because the server couldn't store them: //4yZ8+hR2m5FUn2, 4zRZHcCeRQSgH16b, 03UOnjQ4SkyvSmgS, 0HUXqKGKTN+4b6vF, 4FVIbVBfSqC1qsa5, MgChmWlxSIa09hwD, 3f9lpaGRTEuYf6cy, +ABhlezKSE+j+uJr, 4deaq4JkQ5ud47e8, 0V9lOgTORfyvdiJt, 4XvNvoYPRzW4/2e/, 1s8vxO+tTr2bq8/P, /+g3EMa3S/mSAlvo, 2NtX4Gm+ShWOD5NC, 0l9rds5qR4SbyL8R, 1PN+T8DjQDCpDGhl, /1/hJGT0R3Cj0mzP, /2+PCZy9RI+eRZBr, 3SPERRclTnGDn1PL, /Mjy6oSGTeW7UYJK, 1qln/NiDSKGKOgN7, 4rVDaUhiRbacUl27, 2+r9VeXaTMecwJd+, /GriRh0TSkWmeHiq, 0qV1uMUlQlG4LN8T, +4fjmx4dQhm6VwQv, 4cB4ryoPSRWfH+Qt, 4DJ+IX2ST/SRoLTa, 4YzJwQdZQ8ynnboy, /eynWaG4Rtu3U2U6, 47/LnHr/TneMFAHH, +oVAE3yjS9So5B3z, 3AQ/vOiuTXeXGlig, 02xY2NuZR+GD52DC, +iXlos4JRbKjO/S9, 01O4Blh4TBKgvBLM, 0+GAnz6gSNeM0QcN, 2ax7qTuxQDKpq54z, 4I2QjBjLQvypQBF3, 3KT8pEjURZGjU6Zn, 3v1hOdfQTQihb3GK, 0g4MK5j6QbagTkTJ, 1PlfQQ4qTUWtOAqs, 2Qs2EafzQlqOG/97, +aJ/PthjQ/S76zPh, 1Wq8M46FS5KOonuP, 3fwhSxk1S5iNe9Ha, +BOteTdOSjC4QyCp, 2wvozoD1Qdye/LB6, 2X2+f6OXTxiRinaz, 2Cq880NsSh6CvdVb, +pbxXlgjRVGHqW7j, 2gVGKZnbSeWrwKXC, +x8Ae1XaRTmXHWpG, 255jiEbNQuyxli5f, 2DAcVXt4RAu7g4mM, /2bCG09BRfa6VN6q, 2plQjM3oRU+JQEVS, 4jLDG4PGQ/2rzson, 3a79Ok5KSquQ0VGX, 4SACO1RKStWA0wzn, 11vQVHt4R4CadxeO, 4B5+WJ7lQdychnKw, +XPvYCJXRA+FY9hN, 0vbw108kQ7WqKJRj, 1y5E33wrQfSYX+Fs, 3NPkENrPQp605yH0, 23UYDtZNQXm7tOeB, /ZduIWWjRxO1PTyr, 0LZFHnOaQLKkHk15, +q2rC2TvSnyfneCa, 4AacDMKFSuepaY8H, 0eG6qHROT4Cmr6E/, /pvJVU44Qc2Jte4U, 2VWAkKY1SjOBqhje, +DEy7cWpQE22keJ3, /HzWXi7jTDio8xjn, /ts2mZa9R/ySkqUz, 2KedijgXTXyWysKb, 0+8mpy7NS9GOa4DP, 1RpTsXzrRGWwXFex, /LLiMvmDRWqOxOGL, 1gNEMSPrTY+Ych2C, 4FxceLkfSF2p0PZK, 0hOh+sM+Sgej7ty7, 1ALlPTOSS+CX5UfH, +ccsMCYVS0ejOAvK, /WYNKiH3RRGGzG1T, 2BFOZ7fSRm6wDwbJ, +AsyelCyQsybj081, 22bOOxGwQ5qPXVNd, 4j0AbX/3TKyVr1c5, 0C1y6IzOTeWuuPtP, 4MvA7k/lTyeDk7mD, 2PTUlG/KR9i+jCV2, 1MMVnmjgSTqypJKz, /F/+1EY9TM+c3qO2, /23/2VoaSuW/HKps, 4JnZbzPXRjm9iK67, 2QMRhT7RQY6Op701
1406995078105 Sync.Engine.Forms INFO Uploading 100 - 200 out of 1014 records
1406995078105 Sync.BrowserIDManager DEBUG _ensureValidToken already has one
1406995078108 Sync.Collection DEBUG POST Length: 31437
1406995138212 Sync.Collection DEBUG mesg: POST fail 504 https://sync-40-us-west-2.sync.services.mozilla.com/1.5/1804547/storage/forms
1406995138212 Sync.Collection DEBUG POST fail 504 https://sync-40-us-west-2.sync.services.mozilla.com/1.5/1804547/storage/forms
1406995138213 Sync.Engine.Forms DEBUG Uploading records failed: <html>
<head><title>504 Gateway Time-out</title></head>
<body bgcolor="white">
<center><h1>504 Gateway Time-out</h1></center>
<hr><center>nginx/1.6.0</center>
</body>
</html>
1406995138247 Sync.Status DEBUG Status for engine forms: error.engine.reason.record_upload_fail
1406995138247 Sync.Status DEBUG Status.service: success.status_ok => error.sync.failed_partial
1406995138247 Sync.ErrorHandler DEBUG forms failed: <html>
<head><title>504 Gateway Time-out</title></head>
<body bgcolor="white">
<center><h1>504 Gateway Time-out</h1></center>
<hr><center>nginx/1.6.0</center>
</body>
</html>
No traceback available
1406995138247 Sync.Synchronizer INFO Aborting sync for failure in forms
1406995138247 Sync.Synchronizer INFO Sync completed at 2014-08-02 11:58:58 after 117.28 secs.
1406995138248 Sync.Declined DEBUG Handling remote declined: ["greasemonkey"]
1406995138248 Sync.Declined DEBUG Handling local declined: ["greasemonkey"]
1406995138248 Sync.Declined DEBUG Declined changed? false
1406995138249 Sync.Service INFO No change to declined engines. Not reuploading meta/global.
1406995138249 Sync.SyncScheduler DEBUG Starting client-initiated backoff. Next sync in 6289555 ms.
1406995138249 Sync.SyncScheduler DEBUG Next sync in 6289555 ms.
1406995138249 Sync.ErrorHandler DEBUG Some engines did not sync correctly.

There have been some issues reported with Sync.
See:
*[https://bugzilla.mozilla.org/show_bug.cgi?id=1045691 bug 1045691] - Firefox sync fails with "unknown error" graybar message and 502s
<i>Please do not comment in bug reports<br>https://bugzilla.mozilla.org/page.cgi?id=etiquette.html</i>

I have deleted all my bookmarks from firefox sync by error on reintalling operating system. Is there any way to recover it? I have all bookmarks saved on "Firefox Home" on my iPod. Can I extract bookmarks from "Firefox Home" to my computer? Thanks

I have deleted all my bookmarks from firefox sync by error on reintalling operating system. Is there any way to recover it? I have all bookmarks saved on "Firefox Home" on my iPod. Can I extract bookmarks from "Firefox Home" to my computer? Thanks

Restore your backup.

Firefox Sync encountered an error while syncing: Unknown error

I am trying to connect to the site - https://login.salesforce.com/?ec=302&startURL=%2F5003000000EIhFk and i just cannot login. the site is accessible, but could not log in and I have this error in the status area on the bottom - Firefox Sync encountered an error while syncing: Unknown error

I think I managed to fix this.
Go to [https://account.services.mozilla.com/ your sync account], log in, and click clear your sync data.
Then click the Sync now button on the error message.
The error went away for me.

I set up the the sync add on and had no errors.When I sync now I get"Sync encountered an error while syncing:Firefox sync server maintenance is underway..."I have gotten this mesaage for the last 10 hours.Should I wait or is there an issue with my setup?

I just loaded Firefox onto my laptop. I set up the the sync add on and had no errors. When I hit sync now I get "Sync encountered an error while syncing: Firefox sync server maintenance is underway, syncing will resume automatically." I have gotten this message for the last 10 hours. Should I wait or is there an issue with my setup? I checked the Mozilla sync server status and it listed no issues.

There was a server out last week. see below. now everything works great. thanks for the follow up.
To:
Subject: [Bug 744289] sync107.db.scl3 down
Do not reply to this email. You can add comments to this bug at
https://bugzilla.mozilla.org/show_bug.cgi?id=744289
Gregory Szorc [:gps] <[email protected]> changed:
          What    |Removed                     |Added
            Status|UNCONFIRMED                 |RESOLVED
        Resolution|                            |FIXED
           Summary|error in sync               |sync107.db.scl3 down
     Last Resolved|                            |2012-04-10 19:39:11
--- Comment #2 from Gregory Szorc [:gps] <[email protected]> 2012-04-10
19:39:11 PDT --- Well, this is embarrassing. It looks like one of our
servers was down and for whatever reason we didn't notice.
It should be working now. If you still see errors, please reopen this bug.
Configure bugmail: https://bugzilla.mozilla.org/userprefs.cgi?tab=email
------- You are receiving this mail because: ------- You reported the bug.

Firefox SYNC 1.4.4 website error or ??

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