Win8 system installation .NET3.5 no response and download slow problem method

  

Solve Win8 system installation .NET3.5 no response and download slow problem:

Under the system drive letter such as: C :Windowssystem32 Run:

dism.exe /online /enable-feature /featurename:NetFX3 /Source:X:sourcessxs

X means the root directory of the Windows 8 installation image

Use a virtual drive, or extract the CD image

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