You don't need a license to install ISE, but you need one to generate a bitstream. The WebPACK license is permanently free.

| Problem | Solution | | :--- | :--- | | Installer crashes on Win10 | Use compatibility mode + run as admin. | | iMPACT fails to detect cable | Install legacy FTDI drivers (version 2.08.30). | | "Fatal error: out of memory" | ISE 9.2 cannot use >2GB RAM. Use a VM with 1.5GB assigned. | | Linux GUI font too small | Set export QT_SCALE_FACTOR=1 before launch. |

Installing 20-year-old software on modern OS requires finesse. Here is how to succeed.

Would you like guidance on setting up ISE 14.7 or alternative modern FPGA tools instead?