iTunes asking for backup password???

OK, I will make it simple and clear (although this has been covered ad nauseum in the thread):

• If you have an encrypted backup ("Encrypt Backup" is checked) it is encrypted because you or someone else checked "encrypt backup". Period. That is the only way it can become encrypted.
• The "someone else" can be the administrator of a Microsoft Exchange email server if you have a company email account on your phone. There's at least one case where it was someone's daughter.
• The first time you back up after it is checked the person who did the backup had to enter a password. Twice for confirmation.
• The password entered that first time will be the backup password forever, unless you explicitly change it; even if it was entered 10 years ago. It will stay the same.
• The password is more than a password; it is the encryption key, and is saved in the encrypted backup and the iOS device.
• There is no way to bypass encryption, except to enter the correct passcode.
  • Backing up to a new computer will not bypass it.
  • Deleting the encrypted backups will not bypass it.
  • Buying or downloading software that claims to bypass it will not bypass it.
• The good news is that you get unlimited guesses, and to speed up the process of guessing, uncheck Encrypt Backup and you will be prompted immediately. Most people who have succeeded have found it was a password that they had used elsewhere.