.NET Framework 3.5 installation error: 0x800F0950

Anonymous
2017-12-14T20:14:23+00:00

Hello, I get this error: .NET Framework 3.5 installation error: 0x800F0950

I'm running an HP, Windows 10 home.. Okey i had this situation.. At the beginning i tried to reset my windows cause i wanted to, It didn't work so i installed a new windows 10 home, Then after i while i noticed that every wasn't running correctly, Then after i while i wanted to download .NET Framework 3.5, But that i got this error above, Someone help me please, In need !

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Windows for home | Windows 10 | Install and upgrade

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Anonymous
2017-12-14T20:18:23+00:00

Open Notepad then copy in this code

@echo off

Title .NET Framework 3.5 Offline Installer

for %%I in (D E F G H I J K L M N O P Q R S T U V W X Y Z) do if exist "%%I:\sources\install.wim" set setupdrv=%%I

if defined setupdrv (

echo Found drive %setupdrv%

echo Installing .NET Framework 3.5...

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

echo.

echo .NET Framework 3.5 should be installed

echo.

) else (

echo No installation media found!

echo Insert DVD or USB flash drive and run this file once again.

echo.

)

pause

Save the file as netfx.cmd

Right click it and choose Run as administrator.

The file will install .NET Framework 3.5 automatically after finding the drive letter of your Windows 10 installation media.

If media not found insert Win10 Usb or Dvd drive and run as administrator again.

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Anonymous
2018-09-17T17:26:57+00:00

Hi,

This worked for me... You need to put Installation Media in your DVD drive, Flash Drive or elsewhere... I used a Flash Drive...

Enter this into Command Prompt (Admin) or PowerShell (Admin)…

Dism /online /enable-

feature /featurename:NetFX3 /All /Source:D:\sources\sxs /LimitAccess

Change D: to drive letter the installation media is on...

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  1. Anonymous
    2019-02-04T21:41:59+00:00

    All of this still didn't work when I did it.

    UNTIL - I noticed that the installation media was from a slightly older version of Windows 10.

    I mounted the correct ISO this time, and it all worked perfectly using Andre Da Costa's cmd file technique.

    I figured this out by checking the CBS.log and it said that my version was mismatched.

    This was my error in the CBS.log:

    2019-02-04 14:30:40, Info                  CBS    FOD: Mismatched package: \?\E:\sources\sxs\Microsoft-Windows-NetFx3-OnDemand-Package~31bf3856ad364e35~amd64~~.cab, FOD identity:Microsoft-Windows-NetFx3-OnDemand-Package~31bf3856ad364e35~amd6410.0.18290.1000, cab identity:Microsoft-Windows-NetFx3-OnDemand-Package~31bf3856ad364e35~amd6410.0.17115.1

    Changed my installation ISO from 17115 version to the newer 18290 I just installed from.

    Hope this helps someone else.

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  2. Anonymous
    2019-02-15T16:03:40+00:00

    Hi,

    This worked for me... You need to put Installation Media in your DVD drive, Flash Drive or elsewhere... I used a Flash Drive...

    Enter this into Command Prompt (Admin) or PowerShell (Admin)…

    Dism /online /enable-

    feature /featurename:NetFX3 /All /Source:D:\sources\sxs /LimitAccess

    Change D: to drive letter the installation media is on...

    What if i don't have a copy of the installation files? Where can i get them from?

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  3. Anonymous
    2019-02-15T16:36:14+00:00

    From the Windows installation disc/ISO image. You'll find it in the "Sources\SXS" directory.

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