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Firefox Sync will not sync and has not for 2 months, how do I fix this?

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Sync is not working. It has not updated in 2 months as the screenshot shows. I installed a new SSD drive the first part of February. It worked then as I sync'd with the new installed Firefox. However, it hasn't worked since. I'm lost in how to address this after researching and finding methods to do so. None have worked.

Sync is not working. It has not updated in 2 months as the screenshot shows. I installed a new SSD drive the first part of February. It worked then as I sync'd with the new installed Firefox. However, it hasn't worked since. I'm lost in how to address this after researching and finding methods to do so. None have worked.

All Replies (7)

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Screenshot failed to upload with original post.

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Type about:accounts<enter> in the address bar. [v57+] https://accounts.firefox.com/settings

Make sure sync is active on all devices.


We need to look at the sync logs. Type about:sync-log<enter> in the address bar.

Open the last file created and Copy its contents Now Paste it into this forum.

If the file is too large;

Open a text/word program and load the file. Left-click once. Now <Control> A to highlight everything, then <Control> C to copy it.

Next, have your web browser go to; https://pastebin.com/

Paste <Control> P the content of the file in the window. Note: On the bottom, fill out the boxes as best you can.

Now press Create A New Paste. The page will reload. Copy the new web address, and post it here.

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In case of issues with Sync you can try this:

Disconnect from Sync and Reconnect to Sync again. You can disconnect from Sync by clicking the e-mail address in the "3-bar" Firefox menu button drop-down list or go to "Options/Preferences > Sync".

Delete the signedInUser.json file in the Firefox profile folder and delete the Weave folder (Sync was formerly named Weave) with Firefox closed.

Remove an existing chrome://FirefoxAccounts entry in the Firefox Password Manager.

If that isn't enough then delete the prefs.js files to reset all prefs and maybe also delete the compatibility.ini file to reinitialize the profile.

You can use the button on the "Help -> Troubleshooting Information" (about:support) page to go to the current Firefox profile folder or use the about:preferences page.

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FredMcD said

Type about:accounts<enter> in the address bar. [v57+] https://accounts.firefox.com/settings Make sure sync is active on all devices.

We need to look at the sync logs. Type about:sync-log<enter> in the address bar.

Open the last file created and Copy its contents Now Paste it into this forum.

If the file is too large;

Open a text/word program and load the file. Left-click once. Now <Control> A to highlight everything, then <Control> C to copy it.

Next, have your web browser go to; https://pastebin.com/

Paste <Control> P the content of the file in the window. Note: On the bottom, fill out the boxes as best you can.

Now press Create A New Paste. The page will reload. Copy the new web address, and post it here.

Both computers are sync'd. https://pastebin.com/c5rw2TnW

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cor-el said

In case of issues with Sync you can try this: Disconnect from Sync and Reconnect to Sync again. You can disconnect from Sync by clicking the e-mail address in the "3-bar" Firefox menu button drop-down list or go to "Options/Preferences > Sync". Delete the signedInUser.json file in the Firefox profile folder and delete the Weave folder (Sync was formerly named Weave) with Firefox closed. Remove an existing chrome://FirefoxAccounts entry in the Firefox Password Manager. If that isn't enough then delete the prefs.js files to reset all prefs and maybe also delete the compatibility.ini file to reinitialize the profile. You can use the button on the "Help -> Troubleshooting Information" (about:support) page to go to the current Firefox profile folder or use the about:preferences page.

Tried everything in the list and it did not help. Still says "last sync 2 months ago.

I removed the Weaver file (twice) and it came back again afterwards.

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Is there a recent Sync log available?

You can open about:sync-log via the location bar to see if there is a recent log available. You can upload a recent log if the log is too big to put in a reply.

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cor-el said

Is there a recent Sync log available? You can open about:sync-log via the location bar to see if there is a recent log available. You can upload a recent log if the log is too big to put in a reply.

https://pastebin.com/c5rw2TnW