I have a Windows Server 2008 Virtual Machine setup on my VMware Server install for testing purposes. I had just about finished installing and configuring the OS when I attempted to install VMware Tools and receieved the follwing error:
VMware Tools is not supported on this guest OS.
Check the virtual machine’s configuration to make sure the settings match the installed operating system. Consult the documentation for more details about supported guest operating systems.

The Fix:
- Create a new VMware Datastore pointing to the VMware Server install directory %HOMEDRIVE%\Program Files\VMware\VMware Server
- Select the unsupported OS Virtual Machine and Edit the CD/DVD drive settings found under Hardware
- Select ISO Image and browse for the appropriate Operating Systems VMware Tools ISO file (in this case windows.iso)
- Click OK and restart the Virtual Machine
The ISO will now be mounted as the CD/DVD drive for the Virtual Machine - Browse the contents of the guest OS CD/DVD drive and run the VMware Tools setup (in this case setup.exe)
You will now have a fully functional install of VMware Tools on your unsupported OS.



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