Windows 10: .Net Framework missing from Windows Features

I'm running windows 10 1909 build 18363.1082 and after an update which had a BSOD in the middle of it I am now having troubles with the .NET Framework.

When I try to open any application which used .NET framework I get the following message:






Looking in the 'Windows Features' window there seems to be a duplicate of many of the items, and no options for .NET Framework 3.5 or 4. If I try to tick the box next to any of the .NET Extensibility items it will be unticked the next time I open the window.






And if I then try to install the .NET framework from the microsoft offline or web installer I get the message that .Net Framework 4.8 or later is already installed






I've tried running the .NET Framework repair tool, which came back with the following actions, however that hasn't solved the problem.





The next step gives a lsit of logs, which I'm happy to attach if any of them may be relavent.


C:\Windows\windowsupdate.log

C:\Windows\logs\cbs\cbs.log

C:\Users\Charlie\AppData\Local\Temp\FixDotNet.log

C:\Users\Charlie\AppData\Local\Temp\NetFxSetupEvents.txt

C:\Users\Charlie\AppData\Local\Temp\dd_dotNetFx40_Full_setup 1_decompression_log.txt

C:\Users\Charlie\AppData\Local\Temp\dd_dotNetFx40_Full_setup_decompression_log.txt

C:\Users\Charlie\AppData\Local\Temp\dd_NDP452-KB2901907-x86-x64-AllOS-ENU_decompression_log.txt

C:\Users\Charlie\AppData\Local\Temp\dd_NDP46-KB3045557-x86-x64-AllOS-ENU_decompression_log.txt

C:\Users\Charlie\AppData\Local\Temp\dd_ndp48-web 1_decompression_log.txt

C:\Users\Charlie\AppData\Local\Temp\dd_ndp48-web_decompression_log.txt

C:\Users\Charlie\AppData\Local\Temp\dd_netfxrepairtool 1_decompression_log.txt

C:\Users\Charlie\AppData\Local\Temp\dd_NetFxRepairTool_decompression_log.txt

C:\Users\Charlie\AppData\Local\Temp\dd_SetupUtility.txt

C:\Users\Charlie\AppData\Local\Temp\dd_vcredist_amd64_20201108175941.log

C:\Users\Charlie\AppData\Local\Temp\dd_vcredist_amd64_20201110231713.log

C:\Users\Charlie\AppData\Local\Temp\dd_vcredist_amd64_20201110232050.log

C:\Users\Charlie\AppData\Local\Temp\Microsoft .NET Framework 4 Setup_20201110_202703792.html

C:\Users\Charlie\AppData\Local\Temp\Microsoft .NET Framework 4 Setup_20201111_091635392.html

C:\Users\Charlie\AppData\Local\Temp\Microsoft .NET Framework 4 Setup_20201111_111421841.html

C:\Users\Charlie\AppData\Local\Temp\Microsoft .NET Framework 4.5.2 Setup_20201111_123823104.html

C:\Users\Charlie\AppData\Local\Temp\Microsoft .NET Framework 4.6 Setup_20201111_130411993.html

C:\Users\Charlie\AppData\Local\Temp\Microsoft .NET Framework 4.8 Setup_20201110_175116531.html

C:\Users\Charlie\AppData\Local\Temp\Microsoft .NET Framework 4.8 Setup_20201111_133330728.html

C:\Users\Charlie\AppData\Local\Temp\Microsoft .NET Framework 4.8 Setup_20201111_140723022.html

C:\Users\Charlie\AppData\Local\Temp\FixDotNet_HKCR_Installer.regdump

C:\Users\Charlie\AppData\Local\Temp\FixDotNet_HKLM_Installer.regdump



I've tried running from the command prompt but neither of them show any corruption, and I'm now out of ideas and can't find any other solutions on the forums.


Dism /Online /Cleanup-Image /CheckHealth

Dism /Online /Cleanup-Image /ScanHealth


Has anyone got any further suggestions on how to fix this?


Thanks in advance,
Charlie

:)

 

Microsoft .NET Framework, Unhandled exception

Hi,

Welcome to Microsoft Community.

I suggest you to un-check and recheck .Net framework 3.5 and .Net framework 4.6 advance series from Windows features.

Try the following steps:

• Press Windows + R keys to open Run command.
• Type Appwiz.cpl and select "turn Windows feature on or off" from the left
• Uncheck .Net framework 3.5 and .Net framework 4.6 advance series.
• Restart the computer
• Repeat step 1 and 2 and check .Net framework 3.5 and .Net framework 4.6 advance series.
• Restart the computer.

Regards,

 

Microsoft .NET Framework, Unhandled exception

no, problem is still actual for me.

have MSI Notebook, problem is

System.MissingFieldException: Field not found: 'WPFOSD.GraphicsSwitchWnd.VGAType'.

at MSI.SCM.SCMII.WMIEventMath(Int32 WMIEvent), after i make something by S-BAR buttons like adding volume or something like that.

 

.NET Framework 3.5 installation error: 0x800736B3

Hi,

Welcome to Microsoft Community and thank you for your interest in Windows 10.

I suggest you to follow the below steps to check whether the .NET Framework 3.5 has been installed or not.

• Press Windows+X and then select programs and features.
• On the left hand side click on the option “turn windows features on or off”.
• Check whether the “.NET Framework 3.5” has been checked or not.
• If not check then I suggest you to check it and then install it.

Hope this information was helpful and do let us know if you need further assistance. We will be glad to assist.