Install KB959209 (Windows XP SP2 update for .NET Framework 3.5) before running the main installer.
The .NET Framework 3.1 offline installer package includes the following components: Install KB959209 (Windows XP SP2 update for
After downloading the .NET Framework 3.1 offline installer, follow these steps to install it on your Windows XP SP2 system: Install KB959209 (Windows XP SP2 update for
This is the most common source of confusion. You must download Windows Installer 3.1 (or later) for the .NET setup to execute. Install KB959209 (Windows XP SP2 update for