= Introduction = The OpenVPN TAP-drivers consists of four files for each platform (32/64-bit): * ''.cat:'' contains cryptographic signature for the actual drivers * ''.sys:'' contains the actual driver * ''.inf:'' contains driver metadata If you need to run OpenVPN on Windows Vista/7 64-bit you have to use signed TAP drivers. Unless you sign them yourself, you need to extract drivers from an existing OpenVPN installer. See below for instructions. = Installing an uninstalling the TAP-drivers = Occasionally you may have to try out different versions of the Windows TAP-driver. This can be done with '' is an identifier which ''tapinstall.exe'' uses to detect the correct driver. In case of OpenVPN 2.2* it's ''tap0901''. This may be different in older/newer versions. To view information about an installer driver use {{{ $ tapinstall.exe hwids }}} To uninstall a driver use: {{{ $ tapinstall.exe remove }}} To install a new TAP-driver use {{{ $ tapinstall.exe install }}} It's also possible to [wiki:BuildingOnWindows#ExtractingsignedTAP-driversfromanOpenVPNinstaller extract TAP-drivers from OpenVPN installer] without installing OpenVPN. = Extracting TAP-drivers from OpenVPN installers = Extracting TAP-drivers from an OpenVPN installer is relatively easy: you can use [http://www.7-zip.org/ 7-zip] to open the installer executable. There are both 32-bit and 64-bit versions, but the latter are larger in size.