Firefox Sync don't sync after reinstall windows.
Afret reinstall I loged into Firefox sync and started to wait sync. Nothing happened. I tried once or twice restart firefox, and sync still didn't work. I decided to reinstall firefox with deleting profile folder. After that I loged into F sync and it downloaded history and etc., that I created a couple of minutes ago. I don't understand why it wont download my last profile info.
פתרון נבחר
The previous reply is outdated information. The "Sync Key" (aka Recovery Key) was last used in Firefox 28 with the prevoius version of Sync. Firefox 29 and later versions (with Sync 1.5) have a hidden implementation of the "key" that the user never see's, which is created from the chosen password. As alluded to above, if you change the account password your data in the Sync server is wiped clean to allow you to continue using that account with a new password and to prevent your data from being accessed by an unauthorized person.
Also, you are using Sync in a manner that wasn't intended. Sync was made to synchronize Firefox data across multiple devices, not as a backup medium for one device, as it sounds like you were trying to use it.
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You can't get your data from the Sync server without the proper SyncKey, which is used to encrypt your data going to the server and decrypt it when it is downloaded back to Firefox. When you obtain a new SyncKey for an account, the server is wiped of all your data so it doesn't fall into the wrong hands.
פתרון נבחר
The previous reply is outdated information. The "Sync Key" (aka Recovery Key) was last used in Firefox 28 with the prevoius version of Sync. Firefox 29 and later versions (with Sync 1.5) have a hidden implementation of the "key" that the user never see's, which is created from the chosen password. As alluded to above, if you change the account password your data in the Sync server is wiped clean to allow you to continue using that account with a new password and to prevent your data from being accessed by an unauthorized person.
Also, you are using Sync in a manner that wasn't intended. Sync was made to synchronize Firefox data across multiple devices, not as a backup medium for one device, as it sounds like you were trying to use it.
Yes, you're right. I have always used it like backup, but this time i changed password. Thank you for the clarification.