Lenovo Support - Microsoft .NET Framework 3.0 for Windows XP (32-bit)
This is the most stable and comprehensive version for Windows XP that encompasses the "3.x" series. : Full (Offline) Redistributable Package. Lenovo Support - Microsoft
Click the button. Because you are using the full offline package, the installer will skip the "Downloading components" phase and jump directly to "Installing components." Because you are using the full offline package,
Before running any standalone framework installers, you must ensure your Windows XP SP2 subsystem is capable of processing the packages. Restart the PC
Ensure you are logged into an account with administrative privileges. Sequential Install: Install Windows Installer 3.1 first. Restart the PC. Install .NET Framework 3.5 SP1 .
This occurs when the installer tries to phone home. You must modify the Group Policy or registry to force local source only.