Overview: Are you facing .Net Framework Error while running any application on Windows 10? There are many Windows 10 users who are dealing with .Net Framework issue after updating the Windows to 1903 version. Today in this post we will troubleshoot and fix .Net Framework Error.
So, let’s start with the real user’s practical scenarios!
Scenario 1: Can’t enable .NET Environment in Windows 10 1903
Well, this is a showstopper for me. I’m in the Release Preview ring & installed 1903 (18362.30) yesterday. The update went fine. No issues experienced. Got a Cumulative Update to install today (KB4495666). Installed it & rebooted. The build is now at 18362.53. The .NET framework was disabled & 90% of my applications will no longer run! In “Control Panel/Programs and Features/Turn Windows Features on or off”, “.NET Environment” is unchecked. If I check it & hit “OK” it takes about 10 seconds & says “Windows completed the requested changes”. The .NET Environment, however, is still unchecked when I go back to “Turn Windows Features on or off” & >NET applications still don’t work. I’ve uninstalled all of the updates installed today (KB4495666 & KB4493478), but .NET is still utterly broken. I’ve read that this was an issue prior to the release of 18362 to the Release Preview ring but was supposed to have been fixed. Looks like this MAJOR bug was reintroduced with the cumulative update?
Source: Microsoft Community
Scenario 2: .NET Framework 3.5 and 2.0 Installation Issue
Hello, I’m using Windows 10 Pro Version 1903 (OS build 18362.1)- I’m trying to install .NET framework 3.5 and 2.0 feature, but somethings go wrong and I received the error. Update NetFx3 of package Microsoft .NET Framework 3.0 failed to be turned on. Status: 0x800f0950. Could someone help me to fix this issue?
Source: Microsoft Community
Like the above users, there are multiple Windows 10 users who are facing issues with .Net Framework, let’s follow the below steps to troubleshoot this.
Make Sure .NET Framework Is Enabled
Type in Turn Windows features on or off in Windows search box and click on Turn Windows Features on or off. Make sure .NET Framework 3.5 and 4.8 is checked.
Download Update for .NET Framework 3.5 and 4.8 Manually
Use Microsoft link to download KB4495620 Cumulative Update for .NET Framework 3.5 and 4.8 for Windows 10 for version 1903 from Microsoft Update Catalog.
Also, update Servicing stack update for Windows 10 for Version 1903 from Microsoft Update Catalog
Run the Microsoft .NET Framework Repair Tool
Download, install and run the Microsoft .NET Framework Repair Tool. Repair tool may fix all issues related to the .NET Framework.
Use Powershell And Command Prompt To Fix .NET Framework Issue
Type in Powershell in the windows search box, make a right-click on Windows Powershell and select Run as administrator.
Copy and paste this command dism.exe /Online /Cleanup-image /Restorehealth on the PowerShell window and press the enter key on the keyboard.
Run SFC Scan: Open Powershell windows once again, copy and paste this command sfc /scannow. It may take some time to finish the scan, do not close the windows before the scan completes.
Type in cmd in the windows search box, make a right-click on Command Prompt and select Run as administrator.
Copy and paste below command to restore .NET Framework and optional features.
DISM /Online /Enable-Feature /FeatureName:Microsoft-Windows-NetFx3-OC-Package
Update Windows 10 Using Microsoft Media Creation Tool
Visit this link and click on Download tool now.
Then run media creation exe file and on Windows 10 setup click on Accept for Microsoft license terms.
Now on the next screen select Upgrade this PC now and click on Next.
This may take some time but updating Windows using media creation tool may fix all issues related to .Net Framework.
Reset Your PC/ Reinstall the OS To Fix .Net Framework
If none of the steps works to fix .Net Framework issue then fresh reinstall of Windows 10 may fix the issue. Please note that you will lose all the data and the apps you installed on the system so please backup your data before you reinstall Windows 10. Visit the below link to install a fresh copy of Windows 10 on your PC.
I hope this article helped you to fix .Net Framework issues and errors on your Windows 10 PC.