This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

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

  • 4 ŋuɖoɖowo
  • 38 masɔmasɔ sia le wosi
  • 13 views
  • Nuɖoɖo mlɔetɔ j0sh1130

more options

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.

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.

All Replies (4)

more options

i have the same problem: win7 / FF6 and macosx10.6 / FF6

however sometimes bookmarks were synced.

more options

Same problem. Windows 7 (64bit) and FF 6

more options

Googling for this error message shows this problem has been around for years!

I have yet to find any solutions in the links which Google turns up; how can that be after all this time?

It sure would be nice if the message were more specific than "Unknown error."

I have 3 devices synced. All are running on my home LAN.

  • A Win7 machine running FF 6.0.1
  • A WinXP machine running FF 6.0.1
  • An iPhone 3G running FF Home

Only the Win7 machine has this problem. The other 2 devices are fine. Color me perplexed.

bweissman trɔe

more options

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.