Uninstall RAD PDF May 31, 2019 19:36 Updated To uninstall RAD PDF: Go to the Start menu > Control Panel. Click Programs and Features. Double-click RAD PDF. Click to confirm that you wish to uninstall RAD PDF if any confirmation dialog appears. Related articles RAD PDF Basic Setup RAD PDF Setup Issues Installer Error: A file that is required cannot be installed because the cabinet file C:\Users\...\RadPdfInstaller1.cab has an invalid digital signature. This may indicate that the cabinet file is corrupt. ASP.NET Core / ASP.NET 5 / 6 / 7 / 8 / 9 / 10 / 11 Support RAD PDF on Microsoft Azure