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.

Similar Messages

Display Firefox Sync Unknown error.

Hello!
I already use Firefox Sync, after few days ago i face sync problem. Every time Firefox Sync display "'''Sync encountered an error while syncing: Unknown error. Sync will automatically retry this action'''". So why is that and how do i fix it.
How do i ensure that Firefox Sync properly work.
Thanks!

If you haven't already tried Ibai's solution, I'd be happy to take a look at your Sync log.
https://philikon.wordpress.com/2011/06/13/how-to-file-a-good-sync-bug/

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?

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

Firefox 6 Linux - Sync encountered an error while syncing: Unknown error.

Linux (Ubuntu 11.04).
Firefox 6.
The syncing doesn't work anymore. This message is displayed at the bottom all the time:
"Sync encountered an error while syncing: Unknown error. Sync will automatically retry this action."
Retrying doesn't help.

I had some luck doing the following - Go to https://account.services.mozilla.com/ and login using your sync info. Find the link to Clear Cache data and clear your sync cache (first time failed, then worked). Then do a manual sync to get back in sync. Seems to have cleared up my issue for the time being.

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.

Firefox 4 BETA Sync Glitch: Sync encountered an error while syncing: Unknown error.

I have a screen shot but no where to send it to? The error says (and it's been repeated multiple times) Sync encountered an error while syncing: Unknown error. Sync will automatically retry this action BUTTON: Sync Now" Clicked button multiple times over an hour... no use. :) (hope this helps)
Less a question than a feedback about the program. :)
I realize it will likely be fixed innately, but wanted it to be reported, as I wish to help out the BETA test. *loyal Test Pilot*
Thanks!

I'm running FF4.0.1 and still have this problem

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/

Received an error message "sync encountered an error while syncing: Unknown error"

For 2 days now, I have received a message at the bottom of my browser stating "Sync encountered an error while syncing: Unknown error. Sync will automatically retry this action." I have tried to change my sync settings but that has not worked. I would appreciate assistance with this issue. Thank you.

See this article: [[Firefox Sync is not working]]

"Sync encountered an error while syncing: Unknown error. SYnc will automatiall retry this action" - this error message keeps popping up

"Sync encountered''' an error while syncing: Unknown error. Sync will automatically retry this action" - this error message keeps popping up whenever I am on my email accounts. I hit the "Sync Now" icon, but it comes back after a while.

Note: I just tried deleting and re-creating my Sync account, reinstalling firefox, and deleting places.sqlite, with no success. And "Eooro" from the title is supposed to be "Error".

Sync unknown error

My firefox always show sync unknown error
<br>Attachment is sync error log<br/>
<br>https://www.dropbox.com/s/qch7n7lofvvhf0p/error-1373639092089.txt<br/>

Hi and welcome to the forums!
I would do the following:
Use this link to uninstall the current DM
http://www.blackberry.com/btsc/search.do?cmd=displayKC&docType=kc&externalId=KB02206&sliceId=SAL_Pub...
Download DM 4.5 without Media manager. MM is very unstable:
https://www.blackberry.com/Downloads/entry.do?code=A8BAA56554F96369AB93E4F3BB068C22
Download these USB drivers for 4.5
BlackBerry USB and Modem Drivers ENG (DM4.5 B13)
File size: 12.33545 MB
Date posted: 24-June-07
Download Software
Here is the manual:
http://na.blackberry.com/eng/deliverables/3392/Desktop_enterprise_45_final_492431_11.pdf
Cold boot the PC. Turn of all virus checkers and firewalls.
Install the DM and configure for Outlook 2003.
On the BB:
Pull the battery while the device is ON, replace after a minute, Let the device reboot 1-3 min,
Start the DM and plug the BB into the USB.cable
Sync.
Let us know how it goes.
Thanks,
Please remember to resolve your thread. Put the check mark in the green box that contained your answer! Thanks
Click Accept as Solution for posts that have solved your issue(s)!
Be sure to click Like! for those who have helped you.
Install BlackBerry Protect it's a free application designed to help find your lost BlackBerry smartphone, and keep the information on it secure.

TS1425 5th Generation Nano iPod. The iPod syncs on iTunes when I connect it to my MAC, but when I try to add a song from iTunes to the iPod, I receive the message "Cannot be synced, unknown error occurred (1039)

5th generation iPod Nano - iPod syncs with my iTunes and I can see it in iTunes, but when I try to move a song from my iTunes to the iPod I get an error message "Cannot by synced, Unknown error occurred (1039). System works fine with my 4th generation iPod Nano. I'm afraid to "RESET" my iPod because I may not be able to restore my music and videos afterwards.

Hello Ventanilla 97,
I agree with planb77 with recreating your itunes library. That will fix your issue. If you would like more step by step info go here:
https://discussions.apple.com/message/15028503#15028503
Hope this helps.
~Julian

When i tried to sync my ipod it said "cannot sync. unknown error has occured(-39)

when i tried to sync my ipod it said "cannot sync. unknown error has occured(-39)" how do I fix it??

Are you syncing photos to the ipod? If so, the -39 in this context can sometimes indicate a damaged photo cache. Are you able to sync if you delete your existing photo cache? To find it, see the following document:
iTunes: Understanding the iPod Photo Cache folder

Firefox Sync Unknown Error?

Similar Messages

Maybe you are looking for