Windows 10 reached EOS (end of support) on October 14, 2025. If you are on Windows 10, see this article.

Avatar for Username

Rechercher dans l’assistance

Évitez les escroqueries à l’assistance. Nous ne vous demanderons jamais d’appeler ou d’envoyer un SMS à un numéro de téléphone ou de partager des informations personnelles. Veuillez signaler toute activité suspecte en utilisant l’option « Signaler un abus ».

En savoir plus
Résolu

Firefox Sync Data Loss After PC Reset - Recovery Request

Firefox Échec de synchronisation
첫눈 a répondu
첫눈
첫눈

Hello Mozilla Support Team,

I am writing to request assistance with recovering my Firefox Sync data.

I recently reset my PC and after reinstalling Firefox and logging back into my Firefox account, my bookmarks and saved passwords are completely gone. I believe the sync may have overwritten the server-side data with an empty local profile after the reset.

Account email: [edited from public] @gmail.com Approximate date of data loss: 02 25 2026

I had been accumulating this data for approximately 1 years and it is very important to me. Could you please check if there is any backup of my sync data on your servers that could be restored?

Thank you for your help.

Hello Mozilla Support Team, I am writing to request assistance with recovering my Firefox Sync data. I recently reset my PC and after reinstalling Firefox and logging back into my Firefox account, my bookmarks and saved passwords are completely gone. I believe the sync may have overwritten the server-side data with an empty local profile after the reset. Account email: [edited from public] @gmail.com Approximate date of data loss: 02 25 2026 I had been accumulating this data for approximately 1 years and it is very important to me. Could you please check if there is any backup of my sync data on your servers that could be restored? Thank you for your help.

Modifié le par James

Toutes les réponses (2)

Jonathan_Writes_Things
Jonathan_Writes_Things

Solution choisie

This is a similar thread - https://support.mozilla.org/en-US/questions/1528371

Did you happen to backup your Firefox profile before resetting Windows?

첫눈
첫눈 Auteur de la question

I checked the link you sent me

Thank you for the explanation. I really appreciate your help.

Honestly though, I'm done with Firefox after this. If Sync isn't a backup service, then Firefox should at least warn users about this clearly, or have a built-in option to export data automatically before major system changes. There's no notification, no reminder, nothing.

I lost 4 years of bookmarks and passwords because I trusted a feature that was never designed to protect my data. That's frustrating.

Anyway, thanks again for taking the time to respond. I just needed to get that off my chest.

Why do I have to manually export bookmarks and records in 2026? i don't know

Poser une question

Vous devez vous identifier avec votre compte pour répondre aux messages. Veuillez poser une nouvelle question, si vous n’avez pas encore de compte.