Why can't the USB Blaster or USB Blaster II drivers be installed on Windows when using Quartus® Prime Pro software version 18.1? - Why can't the USB Blaster or USB Blaster II drivers be installed on Windows when using Quartus® Prime Pro software version 18.1? Description Due to a problem in Quartus® Prime Pro Edition version 18.1, the USB Blaster/USB Blaster II driver cannot be installed when using the Windows* operating system. Resolution Install the driver from the following link: 1. Driver USB Blaster 2. Driver USB Blaster II Custom Fields values: ['novalue'] Troubleshooting 1506994612 False ['novalue'] ['FPGA Dev Tools Quartus® Prime Software Pro'] novalue 18.1 ['Programmable Logic Devices'] ['novalue'] ['novalue'] ['novalue']