.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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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
    2018-03-19T17:42:38+00:00

    Error: 740

    Elevated permissions are required to run DISM.

    Use an elevated command prompt to complete these tasks.

    .NET Framework 3.5 should be installed

    Press any key to continue . . .

    what can i do now?pls help

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  2. Anonymous
    2018-03-02T22:43:57+00:00

    Thx for help

    Andre Da Costa,

    I attach a small modification for those who have a USB stick with windows

    the installation file is not install.win but install.esd

    @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.esd*" 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

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    4 people found this answer helpful.
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  3. Anonymous
    2018-02-15T04:51:14+00:00

    Now i think i did everything as you said I mean I'm not much of a programmer but still things went pretty Smooth at first but then as you said in your instruction If media not found insert Win10 usb and yes it did not find the media and put in the usb and it would still not find the media. But now as I think about when you said Insert WIN10 usb did you mean theres a specific usb for win 10 or just any usb because as I think about it right I'm pretty using and ordinary usb...so please explain

    Hi Adam,

    You need to create a Windows 10 installation media using your USB. For the steps, please check this article. Once you're done creating an installation media, you may proceed performing the steps provided by Andre Da Costa.

    Feel free to post back should you need further help.

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    1 person found this answer helpful.
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