0x800f081f : .Net Framework installation error Fixed

Error code 0x800f081f is one of Windows errors that are very specific. This is because it points to a specific issue. It is a .Net Framework-related issue that requires address before you can proceed to perform an action on your computer especially when trying to install an app or a third-party program.

The error code can be accompanied with the message to the effect that Windows is unable to find some files or something similar.

You should never underestimate the importance of .Net Framework. It is required by different applications for proper functionality. Indeed, the framework provides the programming model that application developers use in developing different applications.

One can encounter this .Net Framework 0x800f081f error when using any version of Windows OS. The error specifically relates to .Net Framework 3.5. (It also contains .Net 2.0 and 3.0.).

Windows 7 naturally has Framework 3.5.1 by default. Both Windows 8 and 8.1 have Frameworks 4.5 and 4.5.1 respectively. On the other hand, Windows 10 has Framework 4.6. This simply means that Windows 8, 8.1 and 10 do not feature Framework 3.5, and you have to install it separately because there are applications that rely on it to run.


Reasons Why you encounter error code 0x800f081f


.net framework installation error 0x800f081f

  • After upgrading from Windows 7 to 10 or from Windows Server 2008 to Server 2016.
  • While installing third-party applications or programs that rely on Framework 3.5 to run.
  • In case Framework 3.5 is installed but Windows features is turned off.
  • When installing Framework 3.5 when its related security updates KB2966826, KB29668828, and KB29668827 are already installed.


Fixing .Net Framework error code 0x800f081f

There are several ways you can fix this error with minimal effort. A method that works for you will depend on why you encounter the error and whether or not you had already installed Framework 3.5. While some methods are manual, others require an Internet connection.


Method 1 – Housekeeping

A simple housekeeping of your computer can easily fix 0x800f081f error. You first need to ascertain whether or not Framework 3.5 is already installed in which case related files may be corrupt.

You also need to ascertain whether or not the security related updates are installed and you are trying to install .Net 3.5. You need to uninstall the updates before you can install the framework before you re-install the updates again.

The following methods apply in a case where the framework is not installed or is installed but is not activated.


Method 2 – Activate .Net Framework 3.5 to fix 0x800f081f error

This method applies in the case where the framework is installed but is not enabled.

  • Connect to the Internet.
  • Click on start and Search.
  • Type in “Windows Features” before hitting Enter.
  • Turn Windows features either on or off in the resultant dialogue box (Windows will download and install the necessary files).
  • Disconnect Internet connection and restart your computer to see whether this fixes the error.


  • Open Control Panel.
  • Click “Programs and Features.
  • Now, Click on “Turn Windows on or off.
  • Select “.Net Framework 3.5” check box before pressing “Ok.
  • Restart your computer to see whether or not this resolves the error.

Simply turning on or activating .Net Framework might fix your 0x800f081f error code. If it Doesn’t, you should look at below methods.


Method 3 – Manual Installation of .Net Framework 3.5

1. Create a backup of all your important documents.
2. Insert Windows OS media.
3. Open command prompt.
4. Type “DISM/Online/Enable-Feature/NetF3/All/LimitAccess\(your media drive)\sxs” before hitting Enter.

You should be able to see a progress bar on the CMD window. Remove the installation media before restarting your computer to see whether or not this resolves the error 0x800f081f.

The fact that some applications and programs rely on .Net Framework 3.5 makes it necessary that you install it in order to avoid an encounter with this error. It is a good idea to install the framework even when you have not encountered errors like 0x800f081f because you will certainly encounter it when you try to download an app or program that depends on it.

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