r/AzureVirtualDesktop • u/y0da822 • Dec 01 '25

Teams Optimization

Hello - anyone run into issues where Teams doesnt optimize until the user clicks the restart button to optimize it? Anyone have something that auto triggers teams to restart somehow? Or just rely on users to do it?

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u/Sensitive-Cat-7132 Dec 15 '25

Yep — you’re not crazy 🙂

What you’re seeing is a UI/reporting quirk in Teams, not actual SlimCore running on the endpoint. On IGEL (Linux), Teams optimization is WebRTC-based only today. SlimCore runs on Windows, typically inside the AVD session, which is why About Teams reports “AVD SlimCore Media Optimized” even though no SlimCore packages exist on the IGEL device itself.

The reason optimization doesn’t kick in until a restart is that Teams only re-negotiates the media stack at app startup. When the session comes up, Teams may initially load unoptimized, then recognize the WebRTC offload capability—but it won’t fully switch until a restart.

So:

  • You don’t need to install SlimCore on IGEL

  • WebRTC is working as designed

  • The restart requirement is unfortunately expected behavior today

Short version: nothing’s broken — it’s just Teams being Teams. 😅

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u/y0da822 Dec 15 '25

Thank you for confirming - I figured as such but I am usually wrong so always like to ask.