Forum Discussion
I have used DE0 long time ago and it worked fine.
I need to use it now so I installed Quartus II web edition 13.1, the highest version that supports Cyclone III, DE0's FPGA. However, I faced the same problem as you guys.
Taking the advice from Dave, what I did is I installed the Quartus II software that came with DEO. In my case, it's version 9.0. It still installs in Windows 10, the OS I am using. I uninstalled 13.1 first.
The DE0 control panel still did not work at this point because the Altera USB blaster driver was not installed successfully, no matter what Windows 10 notification says.
So, I manually installed the driver. The driver I used is in the driver folder in the Quartus II install path. I needed to disable digital signing because if not, the driver installation will fail.
I checked if the driver is loaded fine by looking to see if I can select it in the Programmer tool of Quartus II. I can.
DE0 control panel, then, launched correctly.