QuickBooks errors can occur when you install an update for QuickBooks or QuickBooks for Mac. When this happens, the update sometimes fails to complete and terminates the program. QuickBooks Error 15243 occurs if QuickBooks is shut down while attempting to install or download an update, which causes several issues within QuickBooks. This occurs when trying to open a company file, run reports, or import data into the program. View this Infographic to solve this problem in no time.