Installation and Upgrade - Windows Update error 0x8007066A or 66A

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Windows Update error 0x8007066A or 66A
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  Windows Update error 0x8007066A or 66A
  Applies To: Windows | Windows 7 | Install, Upgrade and Activate
  Hello,
  I get Windows Update error “0x8007066A” or “66A” when installing updates using Windows Update or Microsoft Update, Is this a known issue? How do I fix this?
  Thanks
  
  55 People had
  this question
  LittleDevil501
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  Answer
  Hello LD,
  
  This error is actually caused by an issue with .NET Framework 4. You can resolve the issue by doing a repair of .NET Framework 4. See this KB article on how that’s done.
  
  Error code "0x8007066A" or "66A" when you use the Windows Update or Microsoft Update Web site to install .Net Framework updates
  
  Thanks
  
  Bobby
  BobbyMi
  Forum Moderator
  Microsoft
- View Answer at http://answers.microsoft.com/en-us/windows/forum/windows_7-windows_install/windows-update-error-0x8007066a-or-66a/d4fe1203-d165-4e41-9f02-27f079167b2c
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