The QuickBooks Online Backup service includes password protection, which is the key used to encrypt your data when you perform an online backup. The password associated with your Online Backup account also lets you update account information, reinstall the Online Backup client application, and perform a Web Restore to another computer.
To request a password hint:
Note: If you don't see your password hint email within a few minutes, check your junk mail or other spam folder.
To request a temporary password:
If you don't have a password hint associated with your account, or if the password hint doesn't help, request a temporary password.
If this solution does not resolve the issue, you can read discussions and post messages and questions relating to your issue on the Intuit QuickBooks Community site for free, or you can contact a technical support agent for additional guidance. Fees may apply.