error code 0x80240438 while downloading .NET framework 3.5

Question

As said in the title i am having a problem with downloading .NET framework 3.5. I have tried basically everything i can find online concerning the error code  ( even though all of the stuff i can find about the error code is about the store which i have zero problems with)

Error code 0x80240438

Answer 1

I had this problem as well on my machine at work.

Try doing the following it worked and allowed me to download

the .Net Framework 3.5 on my Windows 10 PC :  Go into RegEdit and

set the HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows\WindowsUpdate\AU folder.

DoubleClick on UseWUServer(UseWindowsUpdateServer) and change the value to 0.

If the value is already 0 this fix may not work for you.  RESTART afterwards.

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Moderator's note: It is recommended to create System Restore point before modifying registry.

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Answer 2

Hi Dwema

Open Notepad

Copy and paste the following into it:

@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 it as as framefx.cmd

Right click framefx.cmd

Click 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.

If there is an issue in regards to your install media, download the Windows 10 ISO file then double click it to mount it.

How to download official Windows 10 ISO files

	[http://answers.microsoft.com/en-us/windows/wiki...](http://answers.microsoft.com/en-us/windows/wiki/windows_10-windows_install/how-to-download-official-windows-10-iso-files/35cde7ec-5b6f-481c-a02d-dadf465df326)

Answer 3

Hi,

Try disabling Ipv6 as indicated here

https://answers.microsoft.com/en-us/windows/for...

Answer 4

Hello,

Try the DISM method mentioned here to enable .NET Framework 3.5:

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

Also, see if this video helps you:

https://www.youtube.com/watch?v=Cbw3zRryNUU

Let us know if this helps!

Note: Included link in this reply refers to blog post by a trusted Microsoft MVP, so it is safe.

Answer 5

This worked for me, but with some modification. The latest Windows 10 iso does not have the data required for that script to properly recognized that it is mounted to your computer.

After downloading a Windows 10 ISO directly from Microsoft, open up a command prompt as administrator and run the command below.

NOTICE: Make sure to replace the "PUT_YOUR_MOUNTED_DIRVE_LETER_HERE" in the script below with your exact drive that your iso is mounted to. This can be found in the "This PC" windows that shows all of your "Devices and drives":

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