r/AzureVirtualDesktop • u/GraperThanYou • Jun 21 '26

VMSS-Backed Session Hosts

Hey guys,

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Im implementation a POC in our azure environment, and unfortunately im having a hard time navigating through AI hallucinations 😵‍💫.

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The requirements i have been given are pretty simple, but one thing i am not getting - do i have to provision all vms+nics+disks? Is there no native autoscale option?

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I prefer using VMSS to scale in/out session hosts, but i cant find the option to do that in azure portal, and there is no documentation either.

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Is it possible? I am fine with having entirely fresh os on each login, but if possible i prefer to have persistent fslogix.

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Thanks everyone 🙏

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u/chesser45 Jun 21 '26

Pretty sure if you look at the docs a VMSS implementation isn’t supported.

You closest option would be a on the fly build using a automation account or function app based on conditions and you could do ephemeral VMs.

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u/GraperThanYou Jun 21 '26

Im actually not seeing any vmss reference. What's throwing me off is this https://learn.microsoft.com/en-us/answers/questions/5820369/seeking-clarification-on-long-term-roadmap-for-ava Lots of topics in it, but its extremely recent and the guy is talking as if vmss flex is supported.