If you've run into a problem with Firefox Sync, this article will walk you though the most common solutions.
- If you're unable to connect to Firefox Sync because you've lost Sync account information, see I've lost my Firefox Sync account information - What to do.
Table of Contents
Firefox Sync resets every time I close Firefox
This happens when you have Firefox set to delete passwords when it's closed. To keep Sync from being reset make sure Firefox doesn't delete stored passwords when it's closed. If you have selected Use custom settings for history in the Privacy panel, you'll need to follow these steps:
- At the top of the Firefox window, click on the button and then select At the top of the Firefox window, click on the menu and then select On the menu bar, click on the menu and select At the top of the Firefox window, click on the menu and select
- Select the panel.
- Ensure that Clear history when Firefox closes is unchecked.
- If you want or need to keep this setting checked, click the button next to it and then uncheck Saved passwords in the Data section.
- Click to close the Options windowClick to close the Preferences windowClose the Preferences window
How do I fix Sync problems that display an error message?
If Sync displays an error message, it is possible the Sync Service is not operating as expected. Before attempting any of the procedures below, you should verify the Sync Service isn't experiencing failures by checking on the status of the service at https://services.mozilla.com/status/.
How do I resolve an incorrect name or password error?
If the "Sync encountered an error while connecting: Incorrect name or password. Please try again." error appears in the bottom error bar, complete the following steps:
- Click . The Sync panel will display.
- Click Update. The Update Password window will open.
- Enter your new password in the window.
- Click to close the window and connect to Sync.
How do I resolve a wrong Sync Key error?
If the "Sync encountered an error while connecting: Wrong Sync Key. Please try again." error message appears in the bottom error bar, complete the following steps:
- Click . The Sync panel will display.
- Click Update. The Update Sync Key window will open.
- Get a copy of your Sync Key from the device where you generated the new Sync Key. For details, see Where can I find my Sync Key?
- Enter your new Sync Key in the window.
- Click to close the window and connect to Sync.
How do I resolve a wrong Recovery Key error?
If the "Sync encountered an error while connecting: Wrong Recovery Key. Please try again." error message appears in the bottom error bar, complete the following steps:
- Click . The Sync panel will display.
- Click Update. The Update Recovery Key window will open.
- Get a copy of your Recovery Key from the device where you generated the new Recovery Key. For details, see Where can I find my Recovery Key?
- Enter your new Recovery Key in the window.
- Click to close the window and connect to Sync.
How do I solve Sync problems without an error message?
The following problems do not display an error message:
- Your Sync client isn't compatible with the data you have on the Sync server.
- The Sync servers are having issues to handle your data.
- The Sync servers are under a heavy load - in this case, the error will stop when the server load returns to normal.
Follow these steps in order until one of them fixes the Sync problem:
Check to see if other extensions are interfering with Firefox Sync
- Disable all extensions and themes except Firefox Sync.
- Then test for faulty extensions or themes.
For more information on how to troubleshoot extensions and themes, see Troubleshoot extensions, themes and hardware acceleration issues to solve common Firefox problems
Update Firefox on all your devices
To improve the Sync service, the Sync data format may be changed when the latest Firefox version is released. This means that any of your other devices which have not been updated will need to be updated in order to keep syncing. Update Firefox.
Reset your Sync data
In some cases where you are getting regular errors and restarting Firefox or waiting doesn’t solve the issue, you can try to reset your Sync data. In order to do so, see How do I reset my Sync data?
We generally recommend not taking this approach unless evidence suggests that it will help: there are a number of issues (such as bookmark database corruption) that will not be improved by this step.
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