How do I enable .NET Framework 3.5 / 4.5 within Windows OS?

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Last Updated: 22-May-2019
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Article ID: 000094401
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Problem Statement
How do I enable .NET Framework 3.5 / 4.5 within Windows OS?
 
Solution
.NET Framework 3.5 / 4.5 is built into the Windows OS has a Windows Feature.  To install .NET Framework 3.5 / 4.5 follow these steps:

Non-server Windows OS:
  1. Open the Control Panel and click Programs and Features.
     
  2. Once the Programs and Features window displays, click Turn Windows features on or off.

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  3. Expand and check all features from  .NET Framework 3.5 and .NET Framework 4.5 and click OK.

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  1. .NET Framework 3.5 / 4.5 will install. Once the installation is finished, the Windows Feature window should close.

Server Windows OS:
  1. Open the Server Manager and click Manage > Add Roles and Features.
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  1. Continue to click Next until you feature the Features section.
  2. Expand and check all features from  .NET Framework 3.5 and .NET Framework 4.5 and click OK. 
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  1. NET Framework 3.5 / 4.5 will install. Once the installation is finished, the Windows Feature window should close.
Note: If there are any error while installing .NET Framework 3.5, then please contact your IT team or Microsoft to resolve .NET Framework installation issue.

Keywords
.NET Framework 3.5, aspenONE, AES, MSC