Installing .NET Framework on Windows

Operating System Warning
This solution requires advanced knowledge of your computer's operating system. If you are not sure contact your system administrator for assistance. 


Windows 8

  • .NET Framework 4.5 is an operating system component that is installed by default.
  • .NET Framework 3.5 SP1 is an operating system component that is not enabled by default. It can be enabled in Programs and Features.

Windows 8.1, 10 

  • .NET Framework 4.5.1 is an operating system component that is installed by default.
  • .NET Framework 3.5 SP1 is an operating system component that is not enabled by default. It can be enabled in Programs and Features.


Resolution


**Windows Operating Systems may have different versions of the .NET Framework installed or enabled/disabled.


Some applications require the Microsoft .NET Framework 3.5 Service P1 to be enabled in order to install and function properly.


To enable .NET 3.5  on a Windows  7, 8, 8.1 and 10, perform the following steps:


  1. Open Control Panel, Program and Features (or Control Panel, Uninstall a program depending on your view setting).
  2. Click Turn Windows features on or off.
  3. In the window that appears, check .NET Framework 3.5 (includes .NET 2.0 and 3.0) and .NET Framework 4.8 Advanced Services.
  4. Click OK. Windows will search for required files, or specifically, for Windows source files. This may take a few minutes.
    • If Windows finds the local source files (or files used to originally install your Windows operating system), Windows  will finalize the installation of .NET 3.5. then Click Close to exit.
    • If Windows does not find local source files:
      • it prompts you to download required files from Windows Update.
      • Click Download files from Windows Update.
      • Windows will download required files and finalize the installation of .NET 3.5. This may take a few minutes. 
      • Click Close to exit.

**For the automatic downloads to complete properly, your company policy must allow you to download files from the Microsoft website. If you
receive an error message


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