Windows 10: DISM.exe Failed While Trying to Install .NET Framework 3.5

I am trying to install .NET Framework 3.5. But for unknown reasons, this is not helping me out. Is it because of Windows Services, Computer Management, or the .ISO Windows 10 file?

Error Code: 800F0831





:)

 

Unable to download any framework for .net - (error code 0x80070002)


OK, the Windows 10 Feature installation method should have been straightforward, but since that errored out as well, something else seems to be going on with your Windows, so wait for somebody with more experience to suggest a way out.

In the mean time, if you haven't already, you could give muchomurka's suggestion a go as well with the elevated prompt and an install media to see if it works. The following link shows the detailed steps involved.

Offline install of .NET Framework 3.5 in Windows 10 using DISM

 

.NET Framework 3.5 (Includes .NET 2.0 & 3.0) Installation

I would suggest you touninstall , reinstall and update the .Net framework 3.5.

• Press Start button and type Programs and features
  and select it.
• Select the .Net framework and uninstall.
• Restart the PC andreinstall .Net framework 3.5 from the below link and
  Update.

Download .Net framework 3.5: http://download.microsoft.com/download/6/0/f/60fc5854-3cb8-4892-b6db-bd4f42510f28/dotnetfx35.exe

Note: Install all the pending updates after logging in to Microsoft account and check.

Keep us informed if the issue is resolved. We are glad to help you further.

Try the following:



Press Windows key + X

Click Command Prompt (Admin)

Type in at the prompt OR Copy and Paste these one at a time : (Hit enter after each)

Dism /Online /Cleanup-Image /CheckHealth

Dism /Online /Cleanup-Image /ScanHealth

Dism /Online /Cleanup-Image /RestoreHealth



See if you can enable the .NET Framework or reinstall it.

 

Can't Install NET. Framework 3.5

Hello,

I'm Independent Advisor and Microsoft MVP, here to help you with your question.

Try the DISM method to enable .NET Framework 3.5 on your system.

Please refer following step-by-step guide:

https://www.kapilarya.com/how-to-enable-net-fra...

Let us know if this helps!

Note: Included link in this reply refers to blog post by a trusted Microsoft MVP.