Download Net Framework 3.1 For Windows Xp Sp2 Offline Installer ((exclusive)) (DELUXE)

The only safe offline installer for .NET on XP SP2 is from (via the Wayback Machine or MSDN archives). A trustworthy modern mirror is MajorGeeks or FileHippo (for legacy software), provided the hash matches Microsoft’s original SHA-1.

, as this was the last major version to officially support XP SP2 Stack Overflow Understanding the Versions for Windows XP .NET Framework 3.5 SP1 The only safe offline installer for