Forum Discussion
Altera_Forum
Honored Contributor
15 years agoThere are several threads on the forum about using 64 bit versions of windows with the USB blaster. For example: usb-blaster on windows 7 (http://www.alteraforum.com/forum/showthread.php?t=19233)
One possible solution: Install older USB drivers from Quartus II 7.2 SP3 or install the newer drivers from Quartus II 9.1. Any version in between is not properly signed and x64 versions of windows require signed drivers.