An Application Tells Me I Need, How To Enable

Have you tried to install certain programs on Windows 8 and you get an error saying it needs .NET Framework 2.0? Here’s how to enable previous version of .NET so you can install and use those programs.

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While using Windows 8 or Windows 10, I’ve found that many older programs won’t install or run correctly because they require previous versions of the .NET Framework. Here’s how to enable support for those versions of the .NET Framework.

Now you can start using the programs that require the old versions of the .NET Framework.

52 Comments
52 Comments

超 洪

Why I install .net3.5 manual failed ? I download the .netframework 3.5 and copy to windows 8. I run the .net3.5 installation package. it also popup notice. But I want to install .net3.5 not require the network. any body gives some suggest?

Reply

Luriflax

Thanks, but… an application I’m trying to install requires .NET 2.0, and it won’t recognize the 3.5 with 2.0 included, it must have the standalone .NET 2.0 and nothing else. Now, when trying to install 2.0 standalone, it fails…. guess I’m outta luck.

Reply

Belel

Brain i tried the above procedures but its not working and its gives me error code, am confused.

Reply

Genius little boy

Bro , Listen u gotta turn on windows update , then it ll install for u

Reply

Sir
Timbit

Sometimes this method doesn’t work with Windows 10. You may get an error that it can’t download the files. “Error 0x800F081F”In that case you can still install .Net 2.x/3.x from your Win10 CD/ISO.Go to a command prompt (with admin privs) and type the following:

Dism /online /enable-feature /featurename:Net
FX3 /All /Source:D:\sources\sxs /Limit
Access

where source:D refers to the drive letter of your Windows source media/CD.

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If you’ve just upgraded Windows, you may notice that some programs require the use of earlier versions of the Microsoft .NET framework, which is not included in the latest version of Windows. In some cases, Windows might detect that automatically and prompt you to install the .NET framework version that is required through a dialog, but this is not a given. Read on to learn how to manually install the version of NET Framework that you need.

What Is .NET Framework?

Microsoft .NET Framework is an open-source software development framework created by Microsoft. The first version was released in 2002. It includes both the Command Language Runtime and Framework Class Library.

It’s designed to make it easier to design web and software applications across multiple languages. Developers are able to create applications for Windows, Microsoft Azure, Windows Server, and XML Web service on a single platform.

Install via Windows Update

You need a working Internet connection to use this method.

Press the Win key on your keyboard and type “Windows Features” in the search box.Click “Turn Windows features on or off” to open the configuration dialog.

You can also download version 2.0 and 3.0 directly and search for different versions and the latest service packs within the Microsoft Update Catalog.

Available .NET Framework Versions

While this post focuses on .NET Framework versions 2.0, 3.0, and 3.5, those aren’t the only older versions available. As of August 2021, the latest version is actually .NET Framework 4.8.

The current list of older versions includes:

.NET Framework 2.0.NET Framework 3.0.NET Framework 3.5 (installing 3.5 also installs 2.0 and 3.0).NET Framework 4.0.NET Framework 4.5.NET Framework 4.5.1.NET Framework 4.5.2.NET Framework 4.6.NET Framework 4.6.2.NET Framework 4.7.NET Framework 4.7.1.NET Framework 4.7.2

Troubleshooting Installation Issues

While you usually won’t have any issues when you install .NET Framework, problems do pop up sometimes. Some of the most common include:

Compatibility errors – If you get a message that isn’t compatible with your OS, then the version you’re trying to install isn’t compatible and won’t work. If you know it is supported, install the latest Windows Updates. This error typically happens when trying to install a newer version on an older PC.Invalid Windows install – If you’re not running a licensed copy of Windows, the .NET Framework may not install at all. Registering your copy or installing a valid copy is the only solution.
Windows Update issues – If you get errors about a specific KB number or that additional updates are necessary, install all the latest Windows Updates before proceeding.Corrupted download – If you get any errors about a corrupted installation, check Add or Remove Programs to see if anything did install. Uninstall if possible. Then, manually download the version you need and install it that way. Microsoft offers even more troubleshooting options for more advanced errors.

Check .NET Framework Version

If you’re not sure if you already have the right version installed, it’s easy to learn how to check your .NET Framework version.

Using File Explorer

A quick and easy way to check your .NET Framework version is to use File Explorer. Open File Explorer and enter the following location. (Replace the drive letter if Windows isn’t installed on C.):

Using Power
Shell

Press Win+ X and select Windows Power
Shell (Admin). Enter the following at the prompt:

Get-Child
Item "HKLM:SOFTWAREMicrosoft
NET Framework Setup
NDP" -Recurse | Get-Item
Property -Name version -EA 0 | Where { $_.PSChild
Name -Match "^(?!S)p{L}"} | Select PSChild
Name, version

Using Command Prompt

While the result isn’t as neat and pretty, you can use Command Prompt instead of Power
Shell. Open Start and type cmd. Select “Run as administrator” under Command Prompt when it appears.

Enter the following command:

Read on to learn about the latest Windows update problems and how to fix them.

Frequently Asked Questions

Can I install multiple versions of .NET Framework?

Yes, you can install multiple .NET Framework versions. Different applications require different versions and can coincide peacefully on the same PC. Only install .NET Framework versions that you actually need.

.NET Framework 3.5 SP1 is supported through October 10, 2028. This is ideal for apps that need 2.0, 3.0, and/or 3.5. These are supported long-term since they’re the most popular and stable older versions.

Versions 4.0 through 4.5.1 are no longer supported. Versions 4.5.2 through 4.6.1 will lose support on April 26, 2022.

Versions 4.6.2 and up currently do not have an end-of-support date listed.

If you’re not sure if your PC will support a specific .NET Framework version that you want to install, you can easily check. Microsoft has a list of dependencies and system requirements for every .NET Framework version.

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Crystal Crowder

Crystal Crowder has spent over 15 years working in the tech industry, first as an IT technician and then as a writer. She works to help teach others how to get the most from their devices, systems, and apps. She stays on top of the latest trends and is always finding solutions to common tech problems.

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