Before downloading and installing any unofficial software, including Windows XP SP4 ISOs from Archive.org, users should exercise caution:
Windows XP Unofficial Service Pack 4 : harkaz - Internet Archive
Official support for Windows XP ended with Service Pack 3. However, a developer known as harkaz took it upon himself to create an Unofficial Service Pack 4. This project sought to bridge the gap between the final official update and the modern era. It essentially bundles all post-SP3 updates, including POSReady 2009 updates that continued until 2019, into a single, easy-to-install package. Why Users Look for the ISO on Archive.org