We're calling on all EU-based Mozillians with iOS or iPadOS devices to help us monitor Apple’s new browser choice screens. Join the effort to hold Big Tech to account!

Avatar for Username

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

This thread was archived. Please ask a new question if you need help.

Sync encounters an unknown error everytime I try to sync

  • 1 reply
  • 16 have this problem
  • 1 view
  • Last reply by ben_b

LisaLoo19
LisaLoo19
more options

Firefox Sync stopped working all of a sudden. It always says "Sync encountered an error while syncing: Unknown error. Sync will automatically retry this action." I've retried many many times. I even deactivated my Desktop account and then added it again in Sync. I keep getting the same error. I am running Firefox 4.0.1

Firefox Sync stopped working all of a sudden. It always says "Sync encountered an error while syncing: Unknown error. Sync will automatically retry this action." I've retried many many times. I even deactivated my Desktop account and then added it again in Sync. I keep getting the same error. I am running Firefox 4.0.1

All Replies (1)

ben_b
ben_b
more options

I think I fixed this.

Go to 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.