Microsoft extended XP Embedded support until April 2019. You can trick XP Pro into receiving these updates via registry hack:
If you only need to run XP software, consider: windows xp iso 32 bit
This is the most critical section. Distributing or downloading an ISO from random websites is copyright infringement. However, Microsoft has tacitly allowed certain channels: Microsoft extended XP Embedded support until April 2019
Windows XP (32-bit), based on the Windows NT kernel, was a landmark release that merged Microsoft's consumer and business operating systems into a single platform codenamed "Whistler" based on the Windows NT kernel