I-Firefox Community Forum

Hi everyone,

I’ve been experiencing synchronization issues with Firefox lately.

Current situation: Tabs sync correctly between devices, but bookmarks and passwords no longer sync between my iPhone and my computer.

I’ve also considered an issue with profiles, I currently have three Firefox profiles:

• default-release (currently in use)
• default
• default-release-1

I also used Firefox Troubleshoot Mode (restart with add-ons disabled) to test the issue.

sync-log : The sync-logs show many success-sync entries and only a couple of error-syncs. There are no obvious connection issues (I’m using a shared connection in a rural area). However, bookmarks and passwords are still not syncing properly across devices.

Observed behavior: Sync is active and "functional" Only specific data types (bookmarks and passwords) are affected The issue persists even after signing out and back into Sync, and restarting Firefox on both devices

Checks already done: Sync is enabled for bookmarks and passwords Sync logs mostly show successful operations rather than errors

Hypothesis: A Firefox profile conflict

Question: How can I restore Sync properly without losing my bookmarks, passwords, or other data?

Thank you for your help.

I have been trying to clear out my bookmarks fro several days now and every single time they are restored. I have tried unsyncing my phone and computer and saving backups to try to force restore it to the cleaned up version but it always restores every single bookmark even to the original folder after I moved them around.

Whenever i send a Tab from any Device to a Linux Desktop, the Linux Desktop is almost guaranteed to freeze. It doesn’t matter if that Linux Desktop is my "Dingus" PC with 2GB RAM and Wayland, or my "Workstation" PC with 16GB RAM and X11. On both Desktops, Firefox runs smoothly until it gets sent a Tab from another Device, then the whole Linux Desktop freezes. The Desktop doesn’t slow if i open the Tab on the Desktop in the “Tabs from other Devices” Sidebar instead.

Only my Linux Desktops freeze when they get sent a Tab from another Device. Android doesn’t slow when my Phone gets sent a Tab from another Device.

Hey mozilla team,

I have issues with firefox sync as it doesn't sync old search history. Firefox Sync works perfectly for recent search history and chronic, but I imported an old profile (xyz.default) to firefox and logged in with my mozilla account. Started synching so that the old profile's history gets merged with the current one. It doesn't. I can see it in the imported old profile, but if I check history on another device, it's not there (aka only locally but not synced yet).

Is it generally possible to add an existing profile and then syncing it to merge it with the current search history one?

Suspected sessionstore.jsonlz4 corruption possible Sync rollback conflicts -

Please direct post to Sumo forum including jscher2000 or like-minded wizards.  Chat takes you down a never-ending rabbit hole.   Sync rollback conflicts - extremely large tab sessions spontaneous restoration of previously closed tabs during live browsing

Read several different instructions on Chatgpt that takes you down a never-ending rabbit hole. Firefox is restoring previously closed tabs from days or weeks earlier without user input during active use while typing in the middle of the keyboard with an activated red stylus mouse - used frequently and/or with an external mouse. The thumb pad is turned off. There are no shift, windows, 7 strokes. Upon restart of the computer, the Firefox settings are set to restore only active tabs open from previous session. This is a Lenovo T16 Thinkpad product no. 21HH003yus. The issue appears to be related to session restore corruption, possibly triggered by very large tab volumes (hundreds of tabs). Windows 11 that tabs reopen during active typing (not startup) hundreds of tabs open whether Firefox Sync is enabled ???? whether crashes/freezes occur - no whether the same old tabs repeatedly resurrect - no, but there are so many of them from weeks and months ago. whether you use session/tab extensions  ??? Believe recent version of Firefox or close.

Help please direct post to Sumo forum including jscher2000 or like-minded wizards familiar with suspected sessionstore.jsonlz4 corruption issues. Thanks so much!

I used to be synced across two laptops and my iphone but no longer. I am signed in to my Firefox account on my Windows 10 laptop and on my iphone. The windows 10 laptop indicates that I am also signed in on my Windows 11 laptop, but when I run Firefox on my Windows 11 laptop, it indicates that I am signed out. When I attempt to sign in (on the Windows 11 machine), I get an "unexpected error" flag and I cannot sign in.

How can I fix this?

After the most recent update, my desktop version of Firefox keeps disconnection Sync so my passwords disappear. I also have an iPhone Firefox app doing Sync. The passwords reappear when I reconnect Sync on the workstation, but I want the desktop workstation to be the master and the passwords to always be available. How do fix it?

When I'm trying to login to Sync my Firefox account, I'm getting a cors error after putting in my email address and clicking the sign in button. This is on a new profile with no extensions installed on 150.0

Cross-Origin Request Blocked: The Same Origin Policy disallows reading the remote resource at https://api.accounts.firefox.com/v1/account/status. (Reason: CORS header ‘Access-Control-Allow-Origin’ missing). Status code: 406.