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How to support older Operating Systems in Hyper-V

Microsoft officially supports many of its own Operating Systems from the past, as well as some third party Operating Systems, in Hyper-V.  For a complete list from Microsoft, click here.  From time to time, I have a student in class that still needs to support Windows NT 4.0.  NT4 is not on the list of supported guest operating system for Hyper-V.  You can get it to work though. 

When you create the VM in Hyper-V, open its Settings.

Click Processor.

Notice at the bottom the setting for Run an older operating system, such as Windows NT.
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Even with this option enabled, Windows NT4 is not supported by Microsoft in a Hyper-V environment.  You need to thoroughly test your implementation to make sure the results are acceptable.

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