@destop to Microsoft Q&A Forum, Thank you for posting your query here!
There is a similar thread discussion here, which provide more insight on your query.
Client OS licenses have never been available as part of the VM price in Azure, only Server licenses. If you wish to use Windows 10 VM's you will need to bring your own licenses. You need Windows 10 Enterprise E3/E5 per user or Windows Virtual Desktop Access per user (User Subscription Licenses or Add-on User Subscription Licenses), Multitenant Hosting Rights for Windows 10 licenses.
Additional information: How to deploy Windows 10 on Azure with Multitenant Hosting Rights
Monthly Azure credit for Visual Studio Enterprise subscribers
Hope this helps!
Kindly let us know if the above helps or you need further assistance on this issue.
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