Uninstall your QuickBooks Desktop for Mac application You can follow these steps provided below. In case you'll want to manually update your QuickBooks Desktop for Mac. However, the Mac OS Catalina is not compatible with your QuickBooks Desktop for Mac application since it might cause data file corruption and data loss. Currently, the supported operating system (OS) in this version of QuickBooks is Mac OS Mojave the one you use and Mac Os X v.10 10 ( Yosemite).
Let me help you and give you ideas about the system requirements in QuickBooks Desktop for Mac.
