After restarting, you can verify that .NET Framework 3.5 SP1 is correctly installed by navigating to → Add or Remove Programs and scrolling through the list of installed software. You should see entries for “Microsoft .NET Framework 3.5 SP1” and its subcomponents.
: If you must stick to SP2, download the standalone WindowsInstaller-KB893803-v2-x86.exe package first. After restarting, you can verify that
Missing Windows Installer update or conflicting older beta frameworks. After restarting, you can verify that
If you need to run older applications on Windows XP Service Pack 2 without an active internet connection, this standalone (offline) installer will work perfectly. After restarting, you can verify that