If you must use it, do not install the .exe directly. Download the "ISE Design Suite 14.7 Virtual Machine (VM) for Windows 10" from the Xilinx archive. Use VMware Player to run this image on your Windows 11 PC. It is the only way to guarantee a working toolchain without spending days debugging driver conflicts.
Xilinx ISE 14.7 was released in 2013, and it was designed to run on older versions of Windows, such as Windows 7 and Windows 10. While it may be possible to install and run ISE 14.7 on Windows 11, some users have reported compatibility issues, including: xilinx ise 14.7 windows 11
Xilinx ISE 14.7, released in 2013, is a mature and stable version of the Xilinx design suite, widely adopted in academia and industry for designing, testing, and debugging FPGA-based systems. Windows 11, launched in 2021, brings significant changes in terms of user interface, system requirements, and security features compared to its predecessors. The shift to Windows 11 necessitates evaluating the compatibility of critical design tools like Xilinx ISE 14.7 to ensure seamless workflow and project continuity. If you must use it, do not install the