Users can download, install, and run the quickbooks connection diagnostic tool to resolve any alerts or error messages that may appear during the installation of the QuickBooks Desktop application. QBNetDiagTool.exe, QBServerUtilityMgr.exe, and other names for this programme or function exist. The version 4.0 application, on the other hand, is the most well-known since it includes an in-built antivirus technology to keep it virus-free.