.Net Framework 3.5 fails to install with error code 0x800F081F

Anonymous
2013-01-25T19:11:49+00:00

Original Title: Error installing .net framework 3.5 sp1

I did a refresh of my install of windows 8 pro (64 bit), because Weather and several other apps were failing (they started, then the main window closed, but the small window stayed in the task list to the left; event viewer gave access permissions errors).

This seemed to sort most of the apps BUT now I cannot re-install many programs as they need .net framework 3.5 and this fails to install with error 0x800F081F. I even tried downloading the full installer and running locally but it still gives the same error!

I need the framework to work with OpenXML development, a large part of my work.

(I should also point out the refresh says most apps are retained - it fails to mention all applications are removed!)

Windows for home | Previous Windows versions | Apps

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Anonymous
2013-01-26T07:12:12+00:00

Hi Andy,

Thank you for posting your query in Microsoft Community and giving us an opportunity to assist you.

From the issue description, you are facing issues with installing .Net Framework 3.5 and receiving error code 0x800F081F.

There is a Microsoft Knowledge Base article that provides methods to troubleshoot this issue. I would suggest that you visit the link and use the methods to resolve the issue.

Error codes when you try to install the .NET Framework 3.5 in Windows 8 or in Windows Server 2012

http://support.microsoft.com/kb/2734782

You may also refer this link for more information:

Installing the .NET Framework 3.5 on Windows 8

http://msdn.microsoft.com/en-us/library/hh506443.aspx

Hope this information helps. Let us know if you need any further assistance related to Windows.

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  1. Anonymous
    2016-02-27T16:07:04+00:00

    there's an easy fix for this.

    1>insert windows 10 dvd/usb flash drive or open windows 10 image file(if you have one).

    1> open cmd as administrator .

    2>type this command in cmd :

    Dism /online /enable-feature /featurename:NetFX3 /All /Source:D:\sources\sxs /LimitAccess

      and Replace D: with your drive letter for Windows 10 installation media(DVD/USB).

      for example:- for me the dvd drive letter is H:\ 

     if you still couldn't fix it, i can help you, contact me on ******@gmail.com or add me on facebook, (with the same email id).

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  2. Anonymous
    2016-03-02T21:55:27+00:00

    Give that man a whisky. Been looking for the solution to this for a long time.

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  3. Anonymous
    2016-03-30T19:46:22+00:00

    I've looked through all of the responses here and discovered something very interesting.

    Microsoft has a corrupt CAB online for Windows 10 Pro, and for possibly several other versions.

    Here's my proof:

    We are a volume license customer.  I just downloaded the newer ISO of Windows 10.  I installed this ISO to USB and installed Windows 10 on a laptop.  The laptop works fine and there are no issues, except for using any of our programs that utilize .Net 3.5.

    I used the command prompt DISM command that was recommended in this conversation after failing every other solution.  Then, on a hunch, I started looking at the file it was trying to install.  The installer uses a file called "microsoft-windows-netfx3-ondemand-package.cab" in the X:\Sources\sxs folder.  I tried to extract this CAB file with WINRAR and got an error that it was corrupt.

    I then started following this train of thought by pulling down different versions of Windows 10.  I luckily started with the Windows 10 Media Creation Tool and created an ISO from this.  I pulled the SAME exact file "microsoft-windows-netfx3-ondemand-package.cab" out of it and voila!  Using the DISM command AGAIN against that file installed on the first shot.

    Microsoft, you got some 'splaining to do here.  Don't publish corrupt files to your update server or ISOs!  Aren't you supposed to check these files?

    So specifically, my fix was:

    1. Use the windows media creation tool to create an ISO of the install files.
    2. Open up the ISO with a third party tool like WINRAR or WINZIP.
    3. Pull out the "microsoft-windows-netfx3-ondemand-package.cab" file in the \Sources\sxs directory in the ISO and put it somewhere convenient.
    4. Run a command prompt with admin privileges and run: "Dism /online /enable-feature /featurename:NetFX3 /All /Source:X /LimitAccess" where X is the drive letter and path of the cab file.

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  4. Anonymous
    2016-04-01T00:45:35+00:00

    My fix is.....i'm getting an apple computer/

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