In modern Windows (10 and 11), .NET Framework 2.0 and 3.0 are bundled within the package. Because these are "legacy" features, they are disabled by default and can be installed via an offline method using your Windows installation media.
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The operation will complete with "The operation completed successfully." or "A reboot is required." net framework 2.0 and 3.0 offline installer
These versions represent a massive leap in how Windows applications look and communicate: Run (enable) .NET Framework 2.0, 3.0, 3.5 in Windows 10 In modern Windows (10 and 11),
Microsoft’s official redistributables bundle 2.0 SP2 and 3.0 together. Installing just 2.0 is unsupported and requires manual extraction, which is not recommended. In modern Windows (10 and 11)
If you have a Windows installation media or a network share with sxs sources: