Recover sync data after reseting password
I've changed my personal device and currently I only have Firefox installed for the device I am using. When logging in, I've restarted the account password, expecting that sync data from previous devices will be there even after password reset.
Now I've lost all my data, so is it possible to recover Firefox sync data in this scenario?
Solution choisie
No, I'm afraid that isn't possible.
If you change the password of the Sync account or request a new password because you do not remember the password then all data previously stored on the Sync server will be removed and this data is lost and can't be recovered.
This is because this password is used to encrypt the data locally before uploading to the Sync server, so only that original password can decrypt content that is on the Sync server.
This is how Sync is designed regarding privacy and security and you should always make sure you do not forget the email address and password for the Firefox account.
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Solution choisie
No, I'm afraid that isn't possible.
If you change the password of the Sync account or request a new password because you do not remember the password then all data previously stored on the Sync server will be removed and this data is lost and can't be recovered.
This is because this password is used to encrypt the data locally before uploading to the Sync server, so only that original password can decrypt content that is on the Sync server.
This is how Sync is designed regarding privacy and security and you should always make sure you do not forget the email address and password for the Firefox account.