Firefox Community Forum

Hi everyone,

I'm having trouble logging in to Firefox Sync. I'm getting the error "Something went wrong. Please close this tab and try again." whenever I try to connect. This happens both in the stable release of Firefox and in Firefox Nightly.

I can log in to accounts.mozilla.com without any issues, so my password and account seem fine. The problem is specifically with syncing within the browser itself.

I've tried closing and reopening Firefox, restarting my computer, and even reinstalling both Firefox and Nightly, but the issue persists. I'm running Windows 11 and my Firefox version is 135.0.

Has anyone else encountered this problem? Any suggestions for troubleshooting steps I could take? I'd really appreciate any help as I rely heavily on syncing my data.

I'm attempting to set up sync between my windows laptop and my new android phone. The phone has firefox loaded, allows me to pull up the 'sync and save your data' page, allows me to choose 'ready to scan' and presumably successfully scans the QR code displayed on the laptop (the laptop prompts me to approve the new device). Then the laptop indicates I need to wait to approve it on my phone, and the whole process stalls. The phone continues to display the mostly blank white screen with only the "moz://a" at the top and the spinning blue circle in the center. Eventually the whole thing seems to time out and I receive an error message on the laptop saying "websocket unexpectedly closed" and "device pairing failed".

My two hypotheses are that either still having my old phone (which is being retired to at-home use only, and I'd rather not de-sync) still synced is somehow interfering (seems unlikely), or that something about the new phone's software is interfering in the sync (seems unlikely and way out of my league in terms of troubleshooting around).

Help please?