A final note for confused users: You may see modern apps asking for .NET 4.8 or 6.0. The last .NET version for Windows XP SP2 is 3.5 SP1 . .NET Framework 4.0 and above require XP Service Pack 3 (SP3) or Vista.
: Without this specific update, the .NET 3.5 installer will fail to launch or report a compatibility error. Installing .NET Framework 3.5 on XP SP2
. This unlocks compatibility for .NET Framework 4.0, which many modern "legacy" apps require Microsoft Dev Blogs Language Packs