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Firefox open tab sync has stopped functioning

  • 10 replies
  • 1 has this problem
  • Last reply by Bizbot

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I often use the Sync function to bring open tabs over from my smartphone to my desktop computer. I have noticed over the past month or so, this functionality has become increasingly unreliable and sometimes does not function at all. At the moment I have no synced tabs showing on my desktop. I have signed out and back in to Mozilla on both my smartphone and desktop multiple times, checked the sync settings, and nothing seems to resolve this. There have been a couple Firefox updates on both the desktop and mobile side, none of which have changed this behavior.

Has anyone else been experiencing this? What other trouble shooting steps can I perform? Any help is much appreciated.

Desktop FF version: v131.0 Mobile FF version (Android): v130.0.1

I often use the Sync function to bring open tabs over from my smartphone to my desktop computer. I have noticed over the past month or so, this functionality has become increasingly unreliable and sometimes does not function at all. At the moment I have no synced tabs showing on my desktop. I have signed out and back in to Mozilla on both my smartphone and desktop multiple times, checked the sync settings, and nothing seems to resolve this. There have been a couple Firefox updates on both the desktop and mobile side, none of which have changed this behavior. Has anyone else been experiencing this? What other trouble shooting steps can I perform? Any help is much appreciated. Desktop FF version: v131.0 Mobile FF version (Android): v130.0.1

All Replies (10)

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Is there anyone active on these forums?

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Does it make a difference if you mobile device is on and Firefox is running? Note that it can take some time for Synced tabs to appear in the sidebar after you launch Firefox even if you click Sync Now.

You can open about:sync-log via the location bar to see if recent Sync error logs are available. You can upload the file to a website if you can't post the content of the file in a reply.

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It does not seem to make a difference if my mobile device is on and Firefox is running. There were two sync logs available:

https://paste.mozilla.org/TJt8bAEL https://paste.mozilla.org/4s1Uwpbg

Thank you for taking a look!!

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Are you able to take a look at those logs?

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No. I get and got when I tried to watch them Sunday:

404 Snippet not found This snippet no longer exists. Snippets are automatically deleted when they reach their expiration date.

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Sorry about that, I realized after the fact paste.mozilla expires links 24 hours after posting. These ones should not expire till 11/5/24.

https://justpaste.it/i7q27 https://justpaste.it/huelf

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Just bumping this. Any ideas cor-el?

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Also of note, I have been updating all FF installations as updates become available.

Desktop FF version: v132.0 Mobile FF version (Android): v130.0.3

Modified by Bizbot

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Bump. Is there anyone active on these forums?

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These seem to be the core of the errors, repeated throughout all my Firefox installations on various devices:

1725910449958 FirefoxAccounts ERROR Background refresh of profile failed: {"name":"FxAccountsProfileClientError","code":null,"errno":998,"error":"NETWORK_ERROR","message":"[Exception... \"NS_ERROR_UNKNOWN_HOST\" nsresult: \"0x804b001e (NS_ERROR_UNKNOWN_HOST)\" location: \"JS frame :: resource://services-common/rest.sys.mjs :: onStopRequest :: line 478\" data: no]"} 1725910449962 Services.Common.RESTRequest DEBUG GET https://api.accounts.firefox.com/v1/account/attached_clients failed: 2152398878 - NS_ERROR_UNKNOWN_HOST 1725910449962 Hawk WARN hawk request error: [Exception... "NS_ERROR_UNKNOWN_HOST" nsresult: "0x804b001e (NS_ERROR_UNKNOWN_HOST)" location: "JS frame :: resource://services-common/rest.sys.mjs :: onStopRequest :: line 478" data: no] Stack trace: onStopRequest()@resource://services-common/rest.sys.mjs:478 1725910449962 Services.Common.RESTResponse DEBUG Caught exception fetching HTTP status code: [Exception... "Component returned failure code: 0x80040111 (NS_ERROR_NOT_AVAILABLE) [nsIHttpChannel.responseStatus]" nsresult: "0x80040111 (NS_ERROR_NOT_AVAILABLE)" location: "JS frame :: resource://services-common/rest.sys.mjs :: get status :: line 615" data: no] Stack trace: get status()@resource://services-common/rest.sys.mjs:615 request()@resource://services-common/hawkclient.sys.mjs:230

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