1. How are you trying to install it either it’s from window update or from Microsoft download centre?
I would suggest you to set your computer in Clean Boot state and then try to install it.
By setting your system in clean boot state helps in identifying if any third party applications or startup items are causing the issue.
How to troubleshoot a problem by performing a clean boot in Windows XP:
Note: After clean boot troubleshooting step, follow the “Steps to configure Windows to use a Normal startup state” in the provided link to return your computer to Normal startup mode.