Good day, everyone. My name is Jessie, and I work as a customer support agent. Some consumers wish to know whether the 'QuickBooks Error 324' problem is caused by a variety of things. Yes. The source of the 'QuickBooks Error 324' might be that the QuickBooks file has been corrupted or has experienced some other difficulty. Any app that hasn't been fully installed. The Windows registry has been corrupted. Viruses have to have struck. In two separate QuickBooks Online accounts, the same name is used.