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 RAD PDF Prerequisites 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