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

Sync encountered an error while synching: Unknown error. Sync will automatically retry this action

  • 2 replies
  • 12 have this problem
  • 3 views
  • Last reply by Kamakzie

more options

http://pastebin.mozilla.org/8169256

Just started last night when I switched to the new sync. Any ideas?

http://pastebin.mozilla.org/8169256 Just started last night when I switched to the new sync. Any ideas?

Chosen solution

That is a problem with the history:

1420672321846   Sync.Engine.History        DEBUG   First sync, uploading all items
1420672321848   Sync.Status        DEBUG   Status for engine history: error.engine.reason.unknown_fail
1420672321848   Sync.Status        DEBUG   Status.service: success.status_ok => error.sync.failed_partial
1420672321848   Sync.ErrorHandler  DEBUG     history failed: database disk image is malformed No traceback available

You can check for problems with the places.sqlite database file in the Firefox profile folder.

Read this answer in context 👍 2

All Replies (2)

more options

Chosen Solution

That is a problem with the history:

1420672321846   Sync.Engine.History        DEBUG   First sync, uploading all items
1420672321848   Sync.Status        DEBUG   Status for engine history: error.engine.reason.unknown_fail
1420672321848   Sync.Status        DEBUG   Status.service: success.status_ok => error.sync.failed_partial
1420672321848   Sync.ErrorHandler  DEBUG     history failed: database disk image is malformed No traceback available

You can check for problems with the places.sqlite database file in the Firefox profile folder.

more options

Deleting places.sqlite seems to have fixed the issue for me.