I gave a password to my iphone 5s while i was backup the files. Two weeks later i strat restore the backup and it pop ups " Enter Encrypted password". But i just forgot the password and i have no idea the password in the backup.
iPhone 5s, iOS 9.2.1
You can't if you can't remember its password : About encrypted backups in iTunes - Apple Support
You can't use an encrypted backup if you don't have the password. If you forgot your password, the only way to turn off backup encryption on your device is to erase your device and set up as new. Erasing removes all data from your device. If you don't want to erase your device, restore from an iCloud backup instead.
how do i restore an encrypted backup
