The error code 0x800F0950appears on Windows ten and Windows xi when trying to install the .Net 3.five Framework using the conventional installer or when trying to launch a game or app that requires this dependency. The error message accompanying the fault code is 'The following feature couldn't be installed'.

Net Framework three.5 Fault

After investigating this event thoroughly and attempting to replicate the issue on both Windows 10 and Windows xi machines, information technology turns out that there are several different scenarios that are probable responsible for the 0x800F0950.Here's a shortlist of causes that are probable to facilitate the bogeyman of this effect:

  • Missing 3.v .NET Framework – If you're seeing this mistake while attempting to launch a programme that requires this dependency on Windows 10, all you need to do is trigger the installation from the Windows Features screen. This volition end upward bypassing any issues that yous might exist currently having with Windows Installer.
  • Missing four.8 .NET Framework – In case you're dealing with this trouble after you updated to Windows 11, the error is probably occurring because your OS doesn't have the latest .NET framework packet. Even though the fault points towards the .NET 3.5 iteration, you lot actually demand to ensure that you take installed the latest version using the official channels.
  • Remnants from a previous .NET Framework installation – As it turns out, if you lot previously dealt with a botched .Net installation or you tried to uninstall a Framework package just got interrupted, you might meet this mistake considering the installer is prevented from installing new files due to remnant corrupted equivalents. In this case, yous tin can fix the issue by running the .NET Framework Repair Tool.
  • Outdated Windows build – Another underlying reason that might trigger the installation of the .NET framework to fail is an outdated Bone build. It's not uncommon (on both Windows 10 and 11) for the installation to fail because the .NET Framework the user is trying to install is non supported on the Bone build. If yous notice yourself in this scenario, you can get the issue resolved by installing every pending Windows update first before trying the .NET framework installation.
  • .NET Framework is waiting to be installed via WU – According to some affected users, you lot can too look to see this event occurring in a scenario where the same .NET Framework packet that yous are trying to install is already downloaded and waiting to be installed via WU. In this example, installing every awaiting update and rebooting your PC should set the effect automatically.
  • Corrupted Windows Installer component – If you are unable to install the .NET framework because you are dealing with a corrupted Windows Installer component, one way to bypass the result completely is to handle the installation from a uniform Windows x or Windows 11 installation media via DISM. If the DISM component is likewise affected, you lot tin can likewise create a custom Installation script and running from an elevated CMD prompt.
  • Organization File Corruption – If you end up trying out every possible way to bypass the fault lawmaking and complete the installation of the pending .Net framework and nothing works, the only viable alternative left to yous is to perform a repair install in order to refresh every corrupted Windows component.

At present that you are familiar with every potential scenario that might crusade this issue, here'due south a list of possible fixes that other affected users have successfully used to get to the lesser of this error code:

Install .Cyberspace Framework 4.8 from DotNET (Windows 11 Only)

Go on in mind that Windows 11 is known to trigger the 0x800F0950error when users endeavour to launch a game (via Steam or other game launchers) that require .NET Framework version 3.5. The fox with Windows 11 is, yous no longer only need the required version to launch the game – You also need every newer iteration in order to be able to run the game.

If you lot observe yourself in this detail scenario, you should exist able to get the issue fixed by accessing the DotNET homepage and downloading the Runtime version of the 4.8 .NET Framework using the official server.

Follow the step by step instructions beneath to learn how to practise this:

  1. Open up any browser and admission the download page of DotNET Framework 4.8.
  2. In one case you're inside, click on the Download .NET Framework 4.viii Runtime push button.
    Downloading .Internet Framework 4.eight
  3. After the download is consummate, double-click on the executable that y'all've just downloaded and accept the UAC (User Account Control) prompt.
  4. Inside the installation window, follow the remaining instructions to complete the installation of .Net Framework four.8.
  5. Once the performance is consummate, reboot your computer and see if the issue is at present fixed.

In case the same 0x800F0950 error is still occurring, motility down to the next potential fix below.

Running the .NET Framework Repair Tool

If your previous attempts at installing a .Internet Framework version got interrupted by an unexpected shutdown or anything similar, it's possible that you lot're dealing with some kind of remnant files that are affecting the installation of new .Cyberspace framework instances.

In case y'all find yourself in this situation, the all-time course of activeness is to run the Microsoft .Net Framework Repair Tool and apply the recommended fix in order to clear the remnant files and data clusters that might exist responsible for the bogeyman of the 0x800F0950.

Update: This tool will piece of work on both Windows 10 and Windows xi. The instructions are near the aforementioned.

Follow the instructions below to download and run the .NET Framework Repair Tool:

  1. Open up the download folio of the Microsoft .NET Framework Repair tool from any browser.
  2. Once you're inside the correct folio, click on the Download button under Microsoft .Cyberspace Framework Repair Tool.
    Downloading the latest version of the .Internet repair tool
  3. After the download is complete, double-click onNetFxRepairTooland click yes at the User Account Command to grant administrative privileges.
  4. Follow the on-screen instructions to deploy the repair utility, so follow through with the recommended repair strategies once the initial browse is complete.
    Deploy the recommended changes
  5. Afterwards the recommended repair strategies are enforced, reboot your estimator i more time and retry the installation of the .NET framework again after the next startup is complete.

If the same kind of problem is still occurring, move down to the next potential gear up below.

Install .NET Framework 3.5 using Windows Features (Windows 10 Only)

If you're seeing this error when trying to install the .Net Framework version three.5 from an installer yous've downloaded with your browser, yous might be able to circumvent the problem entirely by installing it via the Windows Features menu.

Note: Windows 11 already has a newer version of this framework installed and enabled past default, and then no action is required on your part to ensure it'southward available to the apps that demand it.

Continue in mind that Windows 10 already includes an archive of .Net Framework version 3.v, y'all simply have to prompt information technology to install. Several afflicted users that were previously encountering the error lawmaking 0x800F0950when installing .Internet Framework version 3.5 conventionally have confirmed that the installation went smoothly when they tried to exercise it via the Windows features screen.

To install the .Internet Framework 3.5 via the Windows Features screen, follow the instructions below:

  1. Open a Run dialog box by pressing Windows key + R. Side by side, type 'appwiz.cpl' inside the text box and printing Enter to open up the Programs and Features bill of fare.
    Type appwiz.cpl and Press Enter to Open Installed Programs Listing
  2. One time you're inside the Programs and Features menu, apply the menu on the right to click on Plow Windows features on or off.
    Accessing the Windows features carte du jour
  3. When you're within the Windows features screen, start by checking the box associated with .Net Framework 3.5 (this package includes .NET 2.0 and 3.0),and so click Ok to save the changes.
    Enabling the .Internet Framework 3.5
  4. At the confirmation prompt, click Yep to initiate the procedure, then wait for the parcel to be successfully installed.
  5. One time the performance is consummate, reboot your computer and run across if the trouble is stock-still once the next startup is complete.

In instance this method was non applicable, you encountered a different error, or you're planning on installing the .NET Framework 3.5 package from an executable you previously downloaded, move down to the next potential prepare.

Install every Pending Windows Update

One reason that might trigger the 0x800F0950error when you're attempting to install the .NET Framework iii.five update is the fact that Windows Update already has a scheduled update set to do the same thing.

Some users encountering the same mistake lawmaking have reported that they finally managed to fix the issue later they updated their Windows 10 / 11 version to the latest build available. After doing this and restarting their estimator, most take reported that .NET Framework 3.5 was already installed so there was no need to employ the dedicated installer.

Note: The instructions on installing any awaiting updates are identical on both Windows versions.

If this scenario is applicable,  install every pending update for your Windows ten computer and see if this takes care of the consequence automatically:

  1. Open a Run dialog box past pressing Windows fundamental + R. Adjacent, type 'ms-settings:windowsupdate'inside the text box and printing Enter to open up the Windows Update tab of the Settings app.
    Run dialog: ms-settings:windowsupdate
  2. Within the Windows Update screen, move over to the right-hand section and click on Check for Updates.
    Installing every pending Windows update
  3. Next, follow the on-screen instructions to install each pending update until you bring your computer up to date.
    Note: In case you are prompted to restart before you get the risk to install every awaiting update, restart as instructed. But one time the next startup is complete, return to the aforementioned Windows Update screen to complete the installation of the remaining updates.
  4. One time you finally manage to install every pending Windows update, yous should find that the .NET Framework 3.5 was already installed past the Windows Update component.

If this didn't happen or you lot are non prepared to install the Windows Updates that are currently pending, move down to the next potential gear up below.

Installing Internet Framework via Installation Media

In example the start 2 fixes didn't piece of work for y'all, ane feasible fix that a lot of users have used successfully is to force a compatible installation media to install the NET Framework for you from an elevated Command Prompt or Powershell window.

This is the equivalent of the method beneath, merely information technology's fashion quicker if you already have a compatible installation media.

In case you desire to give this method a endeavor, follow the instructions below to install the .NET Framework 3.5 version straight from a uniform installation media:

Annotation: Yous can follow the instructions beneath on both Windows 10 and Windows 11. Just brand certain you insert a compatible installation media.

  1. Insert the uniform installation media in your DVD drive, wink drive, or mountain it in case you are using an ISO.
  2. Press Windows key + R to open up a Run dialog box. Next, type 'cmd' within the text box and press Ctrl + Shift + Enter to open an elevated Command Prompt. When yous meet the UAC (User Account Prompt), click Yes to grant administrative privileges.
    Type "cmd" into the Run dialog

    Notation: If you want to utilise Powershell, type 'PowerShell' instead of 'cmd'.

  3. One time you're inside the elevated CMD prompt, type the post-obit command and change 'XXX' with the letter that is currently holding the installation media:
    Dism /online /enable-characteristic /featurename:NetFX3 /All /Source:XXX:\sources\sxs /LimitAccess
  4. Press Enter to initiate this process, then wait for the operation to complete. Once the installation is complete, restart your computer and encounter if the NET framework was installed successfully one time the next startup is complete.

In case you still end upward seeing the 0x800F0950error or the installation failed with a different error lawmaking, move down to the next potential prepare below.

Creating a Custom Installation Script (Windows ten Just)

If the method above didn't work for you or you lot are looking for an culling to using Windows Features, you should be able to featherbed the 0x800F0950fault past creating a custom CMD installation script and run it with elevated privileges.

Just keep in listen that in order to do this, you will need to create a uniform installation media for your Windows x computer.

Update: This method will not work on Windows 11.

If y'all already have a uniform installation media or yous just created ane using the guide above, follow the instructions below to force the installation of the .Net Framework three.5 using a custom script:

  1. Open up a Run dialog box past pressing Windows fundamental + R. Next, type "notepad.exe"and printing Ctrl + Shift + Enter to open upwards an elevated Notepad window.
    Opening an elevated Notepad window

    Note: When you're prompted by the UAC (User Account Control), click Yes to grant administrative privileges.

  2. In one case you're inside the elevated Notepad window, paste the following code:
    @echo off  Championship .Net Framework 3.5 Offline Installer  for %%I in (D East F G H I J K 50 M North O P Q R Due south T U Five W Ten Y Z) practice if exist "%%I:\\sources\install.wim" set setupdrv=%%I  if defined setupdrv (  echo Found drive %setupdrv%  repeat Installing .Net Framework three.5...  Dism /online /enable-feature /featurename:NetFX3 /All /Source:PLACEHOLDER:\sources\sxs /LimitAccess  echo.  repeat .NET Framework iii.5 should be installed  echo.  ) else (  repeat No installation media institute!  repeat Insert DVD or USB flash drive and run this file once once more.  repeat.  )  pause

    Note: You lot volition demand to replace PLACEHOLDERwith the alphabetic character of the drive that's currently hosting the installation media.

  3. Once you successfully insert the code and y'all modify it accordingly, utilise the ribbon at the acme to select File > Salvage As then select an appropriate location where yous desire to save the script you've just created.
  4. You can proper noun it however you want, but it'south IMPORTANT to stop the name with the '.cmd' extension. After you add the right extension, click on the Save push to create the set up.
    Creating the CMD gear up
  5. Next, navigate to the location where you saved the .cmd script previously, then right-click on the file and click on Run every bit administrator from the newly appeared context menu. Next, click Yes at the confirmation prompt and wait for the operation to complete.
  6. At the end of this procedure, this custom script will install the .NET 3.5 Framework and use the Windows installation media to access any support files to get the job washed. Once this operation is complete, restart your computer and run into if the trouble is now fixed.

If you lot're nevertheless seeing the 0x800F0950fault code or you're stuck with a unlike error code, move down the next potential set below.

Performing a Repair Install

If none of the potential fixes above have worked for you, information technology's likely that you're dealing with some blazon of corruption that volition not go away conventionally. In this instance, you should try to resolve the 0x800F0950error code by resetting every Windows-related file.

You can practise this with a make clean install, only our recommendation is to go for a repair install (in-place repair) instead.

While a clean install will not discriminate and delete everything on your Os bulldoze (unless you dorsum it upward in advance), a repair install will only touch on OS components, leaving personal files, apps, and games intact.