Getting "file failed to write" error while syncing.

I am syncing IPADs and IPODs (big family) over USB to a windows based machine. During large syncs it often fails with a message like "file failed to write." It is random as to which file fails. In fact if I keep trying it eventually syncs everything. It's like each file has some chance of failure and I just need to try enough times. It takes forever. Please help!
Some details
- I have updated with latest iTunes
- I have tried different USB cables and USB slots on the computer
Thanks.
-- C

Check out this Apple article -> 'Disk cannot be read from or written to' when syncing iPod or 'Firmware update failure' error when updating or restoring iPod
If you have a USB hub, try removing it and connecting the iPad or iPod to the back of the computer. If it isn't caused by the USB connection, the article suggestions will be a good place to start.

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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.

Error while syncing can not be erased and have gone to all articles and nothing has worked. Have tried to erase my data in the sync file and that can not be done - it says try again another time. What now?

Have gone into my snyc data file to erase all data - error says that it can not be done at this time. I still have the error while syncing on my bar. Have tried to get a new sync number and that will not change - it goes back to the original how can I start over and try again?

This "original file cannot be found" thing happens if the file is no longer where iTunes expects to find it. Possible causes are that you or some third party tool has moved, renamed or deleted the file, or that the drive it lives on has had a change of drive letter. It is also possible that iTunes has changed from expecting the files to be in the pre-iTunes 9 layout to post-iTunes 9 layout,or vice-versa, and so is looking in slightly the wrong place.
Select a track with an exclamation mark, use Ctrl-I to get info, then cancel when asked to try to locate the track. Look on the summary tab for the location that iTunes thinks the file should be. Now take a look around your hard drive(s). Hopefully you can locate the track in question. If a section of your library has simply been moved, or a drive letter has changed, it should be possible to reverse the actions.
Alternatively, as long as you can find a location holding the missing files, then you should be able to use my FindTracks script to reconnect them to iTunes .
tt2

How do I supress the "sync encountered an error while syncing" bar? I get it every time I connect to a work VPN that is isolated from the internet.

Background: For work I routinely need to connect to a secure VPN that is completely isolated from the internet. When using it, I can only connect to the servers that reside within the network and the VPN software (Cisco AnyConnect + NAC Agent) seems to automatically redirect all http requests to external sites to a catch-all 'sorry you can't do that' page.
So while connected to the VPN, Firefox Sync doesn't work and nor do I expect it to. However, my issue is that every time I connect to the VPN, Firefox silently pops up a "sync encountered an error while syncing" error message bar at the bottom of the browser, which I have to manually close. This obviously isn't the end of the world, but having to do it all the time gets annoying so I was wondering if there was a way of suppressing that particular error message or maybe getting Sync to handle the secure VPN more gracefully.

I don't know about blocking that message, but my suggestion is to turn Sync autoconnect off, and use Sync manually.
Type '''about:config''' in the URL bar and hit Enter. <br />
Then type '''''autoconnect''''' in the Search bar at the top. <br />
'''services.sync.autoconnect''' = double-click that pref to toggle it to '''false'''.
Then to trigger a Sync manually, hit '''Sync Now''' in the Firefox menu ''(or the File menu)''.

FF16 always fails to sync, it always shows "Sync encountered an error while syncing: Incorrect account name or password. Sync will automatically retry this."

I'm having this problem since few releases ago, whenever I start FF, it always fails to sync, showing this line on the bottom "Sync encountered an error while syncing: Incorrect account name or password. Sync will automatically retry this action". First thought that the prob was incorrect credentials, but I can freely log-in https://account.services.mozilla.com I tried unlinking and linking my device again, it still happens.
I waited thinking that they'll fix this, from a release to another, today updated to the last version and it still happened.
Firefox: ~16.02
Windows 7 Ult SP1
http://img853.imageshack.us/img853/4070/ffsyncprob.png
Awaiting reply,
Thanks.

I am having this problem with FF 19.0.2 on Win 7 Pro. The sequence of events is:
1. Start Firefox. Get the error bar about incorrect account name or password EVERY time. I close the bar. If I wait a while and then ask FF to try again the error bar reappears.
2. Click on preferences from the bar, and get a dialog "Your password was rejected by the server, please update your password." I click "update" and then am prompted for the master password for the security device. I enter that and am presented with an "update password" dialog.
3. Enter my old password and click "update password." Receive error message "Password incorrect, please try again." I click update again and get the message "Your password has been changed."
4. However now Sync no longer seems to be set up. I go through the setup ritual again, and find I am back where I started.
I have cleared cookies, tried everything in safe mode, and unlinked and relinked the computer. I have verified I have the right password entered at [https://account.services.mozilla.com/ https://account.services.mozilla.com/] None of this helped. The problem is still there, even in safe mode.

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.

I get the error message in Firefox 5 "Sync encountered an error while syncing: Unknown error. Sync will automatically retry this action."

Hello Firefox support. I just started working on a 64 bit Windows 7 machine running Firefox 5 and am constantly getting the following Sync error: "Sync encountered an error while syncing: Unknown error. Sync will automatically retry this action." I can't find an accurate solution on the web. Please help!

Exact same error message here here. Haven't checked our other systems. This one is:
* Firefox 5
* Canonical 1
* Ubuntu Linux 10.04 LTS

I keep getting "Sync encountered an error while syncing: unknown error. Sync will automatically retry this action." It keeps popping up at the bottom of my screen?

I keep getting "Sync encountered an error while syncing: unknown error. Sync will automatically retry this action." It keeps popping up at the bottom of my screen? I click "Sync Now" but a few seconds later it pops up again

does anyone have an answer for this problem?

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 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>

How to fix "Sync encountered an error while syncing:Unknown error."

In mid July, after the firefox update, I had decided to close firefox like I usually do before I open the client for my MMORPG Aion, so I did. I end up not turning on firefox for a few days and when I did my bookmarks were gone as well as my toolbar bookmarks and my history. I start to wonder what happened and then I realised that there was a grey bar at the bottom of my browser stating, "Sync encountered an error while syncing: Unknown error. Sync will automatically retry this action.." I had no idea why this would happen as I never had this problem before so I look at the firefox support database but since I'm quite the greenhorn when it comes to programming there was only so much I could understand. I did try looking for corrupt or locked profiles but I saw none. Now as of today it's going on 2 months since the problem began and just today I recieved the firefox 32.0 update but still have this problem so I'm at my wits end and I not sure if I'll ever get it working again. Also my sync account is the one under the new system I had updated a few days before the problem began it also seems to be working on my other devices. Im lost without my bookmarks please help.

Hi crogs571
The first sync report shows an error with the history:
<pre><nowiki>1415979204255 Sync.Status DEBUG Status for engine history: error.engine.reason.record_upload_fail
1415979204255 Sync.Status DEBUG Status.service: success.status_ok => error.sync.failed_partial
1415979204255 Sync.ErrorHandler DEBUG history failed: <html>
<head><title>413 Request Entity Too Large</title></head>
<body bgcolor="white">
<center><h1>413 Request Entity Too Large</h1></center>
<hr><center>openresty/1.7.0.1</center>
</body>
</html></nowiki></pre>

Sync encountered an error while syncing: Unknown error.

Bookmarks vanished on multiple computers.
Error message on all platforms: Sync encountered an error while syncing: Unknown error.
Android device seems unaffected. Attempts to re-sync good data from android device have no effect.
I filed a bug report but after over 15 days it was marked as a duplicate and rolled into another bug report.
The solutions there are way (WAY) beyond my technical level of expertise, and look to be for the unix OS.
Something about a corrupt root.
I've been very reluctant to clear my sync data, because the impression I get is that I'll lose all my bookmarks. The entire reason I started using Sync was to back them up!
Computer1: Win7 enterprise sp1, 64bit. Firefox 17.0.1
Computer2: Win7 enterprise sp1, 64bit. Firefox 17.0.1
Android device: Dell Streak7 Android 3.2 Firefox 17.0

If you've lost bookmarks then you should make a backup copy of the JSON backups in the bookmarkbackups folder.
*http://kb.mozillazine.org/Backing_up_and_restoring_bookmarks_-_Firefox
Problems with bookmarks and history not working properly can be caused by a corrupted places.sqlite database file.
You can check for problems with the places.sqlite database file in the Firefox Profile Folder.
*http://kb.mozillazine.org/Bookmarks_history_and_toolbar_buttons_not_working_-_Firefox
*https://support.mozilla.org/kb/Bookmarks+not+saved#w_fix-the-bookmarks-file
*http://kb.mozillazine.org/Lost_bookmarks

"Sync encoutered an error while syncing: Unknown error. Sync will automatically retry this action."

Hi,
I want to switch from Chrome to Firefox but I have an issue with the Sync feature.
It always shows the following error: "Sync encoutered an error while syncing: Unknown error. Sync will automatically retry this action."
I already tried this workaround but it did not work: delete my Sync account, completely reset my Firefox profile, import my Chrome bookmarks (using an HTML file), setup a new Sync account (using the same address email then the previously deleted one).
But I still get the error message.
I've seen in other threads that it could be an issue with the history so I also tried to delete it but it did not work either.
Here is my last sync-log file: https://pastebin.mozilla.org/8219943
Thanks for your help.

I've finally found a solution to that Sync issue:
I downloaded the "Places Maintenance" add-on and run the integrity check routine and it seems to have fixed the issue.
https://addons.mozilla.org/en-US/firefox/addon/places-maintenance/

Sync encountered an error while syncing only on my windows desktop not my Mac laptop

I have a Windows 7 Ultimate desktop and a MacBook Pro (mid-2010) running OS X Lion (10.7). Firefox Sync works properly on my MacBook Pro, but I have been getting error messages on my Windows 7 Ultimate desktop that say: "Sync encountered an error while syncing: Unknown error. Sync will automatically retry this action." Both computers have the latest version of Firefox installed (5.0.1). I have tried removing the add-on, and deactivating and reactivating the device, all on both machines. All to no avail. The only thing I can think of that I haven't yet tried is to setup a whole new Sync account, but I do not think I should have to go to that extreme. Any help is appreciated.

If you have tried everything, you should, first open a bug with the log of your server error (so the team can fix it) and then replace the info in the server. It's probably corrupted:
* [https://philikon.wordpress.com/2011/06/13/how-to-file-a-good-sync-bug/ How to file a good Sync bug.]
* [[Replace your Sync information]]

Getting "file failed to write" error while syncing.

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