When installing either the QuickBooks Desktop or a program update, the following error is displayed:
Error 1920: Service QuickBooks Database Manager Service (QBCFMonitorService) failed to start
The installation then rolls back and exits.
The QuickBooks Database Manager scans installed hard drives for QuickBooks company files in order to establish a connection to those files. The service attempted to access a drive on the computer and was unable to, therefore it was unable to start correctly.
You will need to manually rename the QuickBooks Desktop installation folders.
Use Windows Explorer to locate and rename each of the folder locations listed for your version of Windows.
Important: If other Intuit products are installed on your computer, you should only uninstall or rename the QuickBooks version folder found within the Intuit folders: C:\Program Data\Intuit
After QuickBooks is completely removed from your system, you can proceed with a new installation.