If you encounter issues with the official download, some universities and community resources offer reliable mirrors. For example, https://files.arh.pub.ro/kits/Xilinx_ISE_DS_14.7_1015_1.tar is a known, stable mirror used by academic institutions for their courses. However, downloading from unofficial sources carries inherent security risks. It is critical that you only use mirrors from trusted academic or community sources to avoid potentially malicious files.
Halfway through the installation, you will likely see an error: "ERROR: Installation cannot continue because a filter file required for ISE design tools is missing" . download and install xilinx ise 147 windows 10 top
