Well, having your QuickBooks Desktop up to date ensures that there are no technical glitches present in the application that may trigger issues 'QuickBooks Scheduled Backup Not working' while automatically backing up the QuickBooks data. In order to get the latest updates of the QuickBooks Desktop application installed in your system, you are supposed to check out the instructions given below:

1. Firstly, run QuickBooks and make sure that you either have the administrative rights or you are logged in with the administrator account.

2. Next, head to the Help tab and choose the option Update QuickBooks Desktop to proceed further with the update process.

3. You need to hover over the Update Now tab and then click on the Get Updates icon, and this will prompt QuickBooks to download all the available updates.

4. Restart QuickBooks and if prompted to install the updates, hit the Install Updates tab.

5. Lastly, retry to set up automatic backup and see if it is working or not.