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How to solve .NET Framework 3.5 Installation Error 0x800F081F

How to solve .NET Framework 3.5 Installation Error 0x800F081F
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Many Windows 10 and Windows 8 users are running into the following error when turning on the .NET Framework 3.5 (including .NET 2.0 and 3.0).

Windows couldn’t find required files to complete the requested changes.  Make sure you’re connected to Internet, and try again.  Error code: 0x800F081F

This happens because some Windows components are messed up.  If you are a victim too, try the following solution:

  1. Delete everything under: C:\Windows\SoftwareDistribution\Download
    Those are left over from Windows Updates and no longer needed.
  2. From Admin Command prompt, run:
    Dism /Online /Cleanup-Image /StartComponentCleanup
  3. Turn on Net Framework 3.5 from programs & Features again to see if it helps.

 


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