Error: Unity is not supported in this guest operating system

What's Causing This Error

The error 'Unity is not supported in this guest operating system' typically occurs when you're trying to use Unity 3D game engine on a virtual machine (VM) or an unsupported platform. Unity has specific system requirements and doesn't support all types of operating systems or platforms.

Two major reasons for this error are:

1. You are running Unity inside a virtual machine. VMware's "Unity Mode" (which is completely different from the Unity Game Engine) is often mistaken as a supported environment for Unity3D. It is not, and attempting to run Unity3D in such setting can lead to this error.
2. Your operating system isn't officially supported by Unity. Unity supports Windows, macOS, and Linux. If you're using an OS that isn't one of these, or if the OS version is too old, you might encounter this issue.

Solution - Here's How To Resolve It

To resolve the error 'Unity is not supported in this guest operating system', consider the following solutions:

1. Run Unity on a Supported System: Ensure that you install and run Unity on a system with an operating system that is supported by Unity. For example, a physical machine running on a recent version of Windows, macOS, or a supported Linux distribution.

2. Avoid Virtual Machines: If possible, avoid running Unity within a virtual machine. While it may be technically possible to get Unity working inside a VM, performance may be substandard, and certain features may not work at all.

3. Update Operating System: If you are using a supported OS but it's an outdated version, try updating your OS to a version that is supported by the Unity version you're using.