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Specifies that the image or disk that is being used was licensed
on-premises. This element is only used for images that contain the
Windows Server operating system. <br><br> Possible values
are: <br><br> Windows_Client <br><br>
Windows_Server <br><br> If this element is included in a
request for an update, the value must match the initial value. This
value cannot be updated. <br><br> For more information, see
[Azure Hybrid Use Benefit for Windows
Server](https://docs.microsoft.com/azure/virtual-machines/virtual-machines-windows-hybrid-use-benefit-licensing?toc=%2fazure%2fvirtual-machines%2fwindows%2ftoc.json)
<br><br> Minimum api-version: 2015-06-15.