There are a few reason why you might encounter this error::
- You are attempting to backup the same file from multiple computers using the same Online Backup Account ID.
Note: The Online Backup service is designed for use on the same computer that is used for backing up. . Therefore, the Online Backup software cannot be installed and run on more than one machine simultaneously, using the same account number. . A patented incremental backup technology improves the backup service by reducing the length of data transfer after the initial backup. . If these data increments come from two separate sources simultaneously, the data is at risk of being corrupted.
- You have more than one Online Backup software versions installed on the system (one QuickBooks branded and the other non-QuickBooks).