Microsoft .NET Framework
The .NET IRC requires one of the following versions of the .NET Framework:
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.NET Framework 3.5 Full (SP1 recommended)
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.NET Framework 4.0 Full
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.NET Framework 4.5
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.NET Framework 4.6
For Windows 7, 8, 8.1, and 10, a supported version of the .NET Framework is included in the OS. The .NET Framework is also available at the Microsoft Download Center: http://www.microsoft.com/download.
The .NET Framework versions 3.5 and 4.0 have two deployment options: Full and Client Profile. The Client Profile is a subset of the Full framework. The .NET IRC is supported with the Full framework only; the Client Profile is not supported. Versions 4.5 and later of the .NET Framework do not have the Client Profile option.