Installing .NET Framework 3.5 on Windows 8

When you try to install applications require .NET 3.5 (or earlier) you get this prompt

If you installed Windows 8 from USB or any other device that is not available, the installation of the .NET Feature will fail with errorcode.

• 0x800f0906: “Windows couldn’t connect to the Internet to download necessary files. Make sure that you’re connected to the Internet, and click Retry to try again.”
  

  or
  

• 0x800F081F: “The changes could not be completed. Please reboot your computer and try again.”
  

   

  
  

   

  To install this feature, do the following:
  

1. Mount the Windows 8 installation media and type the following command from an elevated command prompt:
   
2. Dism /online /enable-feature /featurename:NetFx3 /All /Source:x:sourcessxs /LimitAccess 
   

   (where x: is the drive letter for the Windows 8 ISO image or DVD.)
   

Voila!