Can I install NET Framework 3.5 on Windows 7?

I need to install version 3.5 of the .NET Framework in Windows 7, but when I try to install it, it shows the following error:

"Turn on/off .NET Framework" option in System Features

I tried doing this, but I don't understand what it means. Can anyone help me?

Cody Gray

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asked Mar 7, 2011 at 9:19

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That message is trying to tell you that you need to install .NET 3.5 a different way under Windows 7. Because it's included as part of the operating system, you use the "Turn Windows features on or off" function to get to it, instead of installing a downloaded redistributable package.

1. Open the Start menu and click "Control Panel".
2. Under the "Programs" category, click the "Turn Windows features on or off" link text.

answered Mar 7, 2011 at 9:25

Cody GrayCody Gray

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Run the following command as an admin:

DISM /Online /Enable-Feature /FeatureName:NetFx3 /NoRestart

That'll install .NET Framework 3.5 SP1, 3.0 SP1, & 2.0 SP1 ... same as enabling it through the GUI in Control Panel.

answered Mar 7, 2013 at 18:51

VertigoRayVertigoRay

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You may disable/re-enable the Microsoft .NET Framework 3.5.1 within the Control Panel to effectively repair it:

Control Panel > Programs and Features > Turn Windows feature on or off.

Uncheck the Microsoft .NET Framework 3.5.1 entry. Click OK to accept this setting and return to Turn Windows Features on or off to re-enable Microsoft .NET Framework 3.5.1 by checking the box.

answered Apr 1, 2014 at 10:59

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Windows 7 comes with .NET 3.5 you just need to enable it in Windows Features.It gets installed,it selects automatically what else needs to be installed

answered Mar 7, 2011 at 9:24

abmvabmv

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• Remove From My Forums

• Question

• Hi All,

  Can you provide the link to download for .net framework 3.5 for windows 7 ?

  as per the current url download for .net 3.5 its supported only for all Os besides windows 7

  http://www.microsoft.com/downloads/details.aspx?FamilyID=AB99342F-5D1A-413D-8319-81DA479AB0D7&displaylang=en     - link1

  System Requirements

  • "Supported Operating Systems: Windows Server 2003; Windows Server 2008; Windows Vista; Windows XP"
  and to download the .net framwork 3.5 for windows 7 i see the below link

  http://www.microsoft.com/downloads/details.aspx?familyid=C17BA869-9671-4330-A63E-1FD44E0E2505&
  displaylang=en     - link2

  which again says the system requirments as having sp1 installed which is not really working for me

  
  "The .NET Framework 3.5 SP1 tools and samples contained in this SDK require installation of the .NET Framework 3.5 SP1 which is available with Visual Studio 2008 or a standalone install of the .NET Framework 3.5 SP1. "
  
  Note: i have tried downloading the link1 and tried installing in windows 7 but i see no applicaiton running for the same even i am admin for that system.

  Does trying link2 resolves the issue?

  isn't there anywhere else i can download the .net 3.5  alone for windows 7 since the link2 is very huge( 4gb).

  any suggestions\fix are welcome

  ---

  MCTS Web application Technology Specialist

Answers

• Hi Rama Charan,

  Thank you for your post.

  The second link is referring to Windows SDK instead of .NET 3.5 installation.

  For Windows 7, .NET Framework 3.5 with SP1 is shipped with it as one of OS component.
  For .NET Framework 3.5 with SP1, it includes .NET 2.0 with SP2 and .NET 3.0 with SP2 as prerequisite.
  This means, you have the .NET Framework 2.0 SP2, 3.0 SP2 and 3.5 SP1 plus a few post 3.5 SP1 bug fixes on Windows 7. They are OS components. .NET 3.0 SP2 and 3.5 SP1 can be added or removed via the Programs and Features control panel.
  Thus, we don't need to manually install them.
  For more information, please check: http://blogs.msdn.com/astebner/archive/2007/03/14/mailbag-what-version-of-the-net-framework-is-included-in-what-version-of-the-os.aspx

  Hope this helps! If you have any concern, please feel free to let me know.

  Best regards,
  Yichun Chen

  ---

  Please remember to mark the replies as answers if they help and unmark them if they provide no help.
  Welcome to the All-In-One Code Framework! If you have any feedback, please tell us.

  • Edited by Monday, November 23, 2009 10:02 AM typo
  • Marked as answer by Rama Charan Monday, November 23, 2009 10:07 AM

• Hi Rama Charan,

  Thank you for your reply.

  For your first question:
  Since .NET 3.5 SP1 is shipped with Windows 7 as OS components, to remove it, we can turn off this feature via the Programs and Features control panel.

  For your second question:
  Please use Verification Tool to verify .Net Framework 3.5. If .Net Frameworks 3.5 cannot be verified on the computer, you can try to follow the steps mentioned in the following blog to repair it on Windows 7.
  See: http://blogs.msdn.com/astebner/archive/2007/03/26/how-to-repair-the-net-framework-2-0-and-3-0-on-windows-vista.aspx (also apply for Windows 7)

  And thank you for your kindly suggestion. Sorry for inconvenience. I really appreciate that! :)

  Hope this helps! For any further concern, please feel free to let me know.

  Best regards,
  Yichun Chen

  ---

  Please remember to mark the replies as answers if they help and unmark them if they provide no help.
  Welcome to the All-In-One Code Framework! If you have any feedback, please tell us.

  • Marked as answer by Rama Charan Monday, November 23, 2009 10:47 AM
  • Unmarked as answer by Rama Charan Monday, November 23, 2009 10:48 AM
  • Marked as answer by YiChun Chen Tuesday, November 24, 2009 1:55 AM

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