To install .NET Framework 3.1 using the offline installer, follow these steps:
: Obtain the Microsoft .NET Framework 3.5 Service Pack 1 Full Package (approximately 231 MB) from a computer with internet access. To install
Basic system requirement for framework compatibility. How to Download .NET Framework 3.5 SP1 (Offline Installer) Since it is the offline version, it will
and follow the prompts. Since it is the offline version, it will not attempt to download additional files from Microsoft’s now-unstable XP-era servers. Windows Installer 3.1 update needed before you begin the .NET setup? You must have this installed to run the
: This is likely where the "3.1" confusion stems from. You must have this installed to run the .NET setup. It is available via the Microsoft Download Center .
To confirm installation:
If you still have a working XP SP2 machine, you have likely noticed that the official Microsoft web installer ( dotnetfx35setup.exe ) no longer works. Why?