When numerous instances of the Windows installation are running, the QuickBooks error code 1618 appears on the screen. The QuickBooks installation cannot proceed as a result. The windows installer is a necessary component for application installation. It helps with the application's installation, update, uninstallation, and repair. You may usually run into this error while attempting to upgrade the QuickBooks software.
While running the setup tool to install QuickBooks Desktop on your PC, a warning message along with the QuickBooks error code 1618 appears. You don't need to worry, though, because this article will give you every solution for fixing QuickBooks Error 1618.