We're calling on all EU-based Mozillians with iOS or iPadOS devices to help us monitor Apple’s new browser choice screens. Join the effort to hold Big Tech to account!

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

synchronization problem

more options

Hello! I have a serious problem. I lost access to my data because I changed my password, so my data is no longer synchronized. I reinstalled my Windows, and I forgot the old password I had on that Windows. As I reinstalled, I decided to change the password because I didn't remember it, but after that I found out that synchronization doesn't work. Please help me, I had very important bookmarks that were there. Thanks in advance!

Hello! I have a serious problem. I lost access to my data because I changed my password, so my data is no longer synchronized. I reinstalled my Windows, and I forgot the old password I had on that Windows. As I reinstalled, I decided to change the password because I didn't remember it, but after that I found out that synchronization doesn't work. Please help me, I had very important bookmarks that were there. Thanks in advance!

All Replies (4)

more options

Sorry to hear about this problem. Did your Windows Reset/Refresh create a folder named

C:\Windows.old

That's a temporary folder for your data if you asked Windows to save it in that process.

If you do see that folder:

Set Windows to show hidden files and folders -- this Microsoft article has the steps:

https://support.microsoft.com/en-us/windows/view-hidden-files-and-folders-in-windows-97fbc472-c603-9d90-91d0-1166d1d9f4b5

Then explore that folder up to this point (if it exists):

C:\Windows.old\Users\<username>\AppData\Roaming\Mozilla\Firefox\Profiles\

If you find recent data there, please pause and we can suggest how to restore old bookmark backups.

more options

Unfortunately, I did a completely clean install of windows and I don't have that folder. Is there any other way to restore my bookmarks?

more options

Did you ever have another device connected to your Sync account that might still have a copy?

Unfortunately, mobile devices can't export lists of bookmarks, so it would be easier if another desktop/laptop had been connected -- in which case, do not connect to the new account until you backup/export the bookmarks on that system.

more options

No I only had my one computer with firefox installed on it. I just didn't even know I would need confirmation on an already authorized device to sync the data