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

  
Solve the Win8 system installation .NET3.5 no response and download slow problem:
Under the system drive letter: C: Windowssystem32 Run:
dism.exe /online /enable-feature /featurename:NetFX3 /Source :X:sourcessxs
X indicates the root directory of the Windows8 installation image
You can use a virtual CD-ROM drive or extract the CD image

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