How do you install .NET Framework 3.5 and below in Windows 7?

Hi therandomguy1998,

Perform the steps mentioned below and check if it helps.

1. Download dotnetfx_cleanup_tool.zip from the following site:

http://blogs.msdn.com/cfs-file.ashx/__key/CommunityServer-Components-PostAttachments/00-08-90-44-93/dotnetfx_5F00_cleanup_5F00_tool.zip

2. When you are prompted, click Open, and then click Extract Now.
3. In the files that you extracted, double-click cleanup_tool.exe.

If you are prompted for an administrator password or for a confirmation, provide the password, and then click Continue.

4. In the Do you want to run the .NET Framework Setup Cleanup Utility? message, click Yes.

****5) Click Yes to accept the license agreement.

a) In the Product to cleanup window, click the drop-down list, select a .NET Framework version that you want to remove, and then click Cleanup Now.

Note The cleanup tool does not let you remove the .NET Framework 2.0 in Windows Vista or later versions of Windows because the .NET Framework is installed as an operating system component.

b) After the .NET Framework is removed, restart the computer.

 Download and install the following components:

.NET Framework 1.1Microsoft .NET Framework Version 1.1 Redistributable Package (http://www.microsoft.com/downloads/details.aspx?FamilyID=262d25e3-f589-4842-8157-034d1e7cf3a3)

.NET Framework 1.1 Service Pack 1 (SP1)Microsoft .NET Framework 1.1 Service Pack 1 (http://www.microsoft.com/downloads/details.aspx?familyid=A8F5654F-088E-40B2-BBDB-A83353618B38)

.NET Framework 3.5 SP1 (this will also install the .NET Framework 2.0 SP2 and the .NET Framework 3.0 SP2)

Microsoft .NET Framework 3.5 Service Pack 1 (http://www.microsoft.com/downloads/details.aspx?familyid=AB99342F-5D1A-413D-8319-81DA479AB0D7)

c) Restart the computer.

Note: .Net framework 4 contains all the packages of .Net Framework.