QuickBooks Error 1920 usually shows up try to install QuickBooks Database Manager update. This error also happens when the database failed to connect with the company files on the hard drive. There are several causes behind this like Improper installation of the software, due to power failure, malware attack, or some invalid entries in the Windows registry. To solve this error try to clean install the QuickBooks software program, reinstall the database manage, and configure the windows firewall settings. However, if the problem still persists get in touch with our certified expert's dial (844)-888-4666.