USB Blaster help - USB Blaster help I have installed the stand alone Quartus Programmer 21.1.1.850. I installed the USB Blaster drivers. The windows laptop sees the USB Blaster when it's connected. However, the programmer software does not see the USB Blaster. I cannot select it when trying to assign hardware, it does not even appear as an option. Has anyone seen this before? Replies: Re: USB Blaster help Hi AWann1, I’m glad that you find the solution, I now transition this thread to community support. This will be a good reference for the others Replies: Re: USB Blaster help Apparently Intel's drivers for the Byte Blaster are not signed in Windows 10. So Windows doesn't allow them to work. Here's what I found to get it function: 1 - Go to windows 10 settings and search for "advanced startup options" 2 - Under Advanced startup, hit "Restart now" 3 - After a moment, you'll get a "choose an option" screen - choose "Troubleshoot", then "Advanced options", then "Startup Settings" 4 - You'll get a screen telling you what you will be able to change and a single "Restart" button - press it. 5 - You'll be given a menu of options, number 7 disables driver signature enforcement 6 - When the PC restarts, use Device manager to update the drivers, point to the "drivers" folder in your quartus install directory 7 - When you've finished, restart normally to re-enable signature enforcement Replies: Re: USB Blaster help I am using Windows 10 Pro 64b 21H2 and have no Altera USB driver issues. I have two separate USB pods (a TerAsic Blaster, and a Waveshare USB Blaster from Amazon) and a DE1 board with embedded interface. They all work fine, and I see 3x USB interfaces installed and available. I use either Quartus 13.0sp1, 16.0, or 21.1 depending on what I am doing. Here is what Windows 10 shows about my Altera driver: Replies: Re: USB Blaster help Thank you for this suggestion! Unfortunately, it did not seem to make any difference. The USB Blaster is still not seen by the Programmer window. Replies: Re: USB Blaster help Windows 10 Replies: Re: USB Blaster help Hi AWann1 , You may give it a try the steps mentioned in the following KDB: Why is Altera® USB Blaster not detected by Quartus® Programmer when it is recognized correctly in Device Manager? Hope this could solve your issue. Thanks. Regards, Fakhrul Replies: Re: USB Blaster help What version of Windows software is your laptop running?