Well, there are a variety of techniques to get QuickBooks Scheduled Backup Not Working. But running the verify and  Rebuild Data Utility tool is one of the most successful and convenient ways to restrict such an issue. Here's how: 

• At first, open the QuickBooks Desktop application and head to the File menu.

• Now, select the Utilities tab and then tap on the Verify data option. 

• After that, go to the option that states QuickBooks scan all the company files & data, and search for the damage. 

• Later on, you might get a pop-up saying your data has lost integrity. Close the message tab and press the File tab again. 

• Move your cursor to the Utilities sections and select Rebuild data. 

• Furthermore, press OK at the Backup Company Data pop-up window and get a backup of your company filer data on the desktop. 

• Next,  the QuickBooks Rebuild Data tool will repair the damage in the company file. 

• Once you see the message Rebuild has Completed, you would have to hit the OK tab and try to schedule the automatic backups once again.