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JasonP76
Enthusiast
Enthusiast

Issue with Teams Screen Sharing and BLAST Protocol

Hi All,

I have a slightly odd one here.

About 6 months or so ago we upgraded to the latest version of Teams on our VDI infrastructure. All of a sudden when a user wanted to do a screen share and try give someone control there was no bar at the top of the screen to allow this. The other user could request this, but there presenter could not click on a button to allow it. After quite a lot of troubleshooting and raising a ticket with Vmware, we found that the bar was actually there, but invisible. Literally invisible. You could move your mouse over to the general area and you would actually see the info popups saying "Presenting..." and "Only give control to people you trust". So the feature was there but was not being rendered. If we change the protocol to PCoIP or even Microsoft RDP, the bar would be rendered and shown. This only happened using Blast. The workaround at the time was actually disabling H264 from the client and only allowing HEVC. This happens with both users connecting inside or from outside the infrastructure (So with a UAG or direct).

At the time we were running:

  • Windows 10 1909
  • Agent and Connection Server 7.13.1
  • NVIDIA vGPU (2GB per VDI) - 11.6 Driver 
  • Instant Clones
  • Latest Machine wide Teams installed (currently 1.4.00.29469)

We have now upgraded our VDIs to Windows 10 21H2 and Agent/Connection Server 8.4 (2111), and without changing any of the settings we had previously for the clients, this issue has come back again, but this time neither running the client with HEVC or H264 on Blast works, but once again any other protocol does work.

Has anyone seen this issue before ? 

I have had Vmware pointing the finger at Microsoft and Microsoft pointing the finger at Vmware. Neither wanted to take responsibility for this. Personally I think this is a Vmware issue considering that this issue only occurs using the Blast protocol.

Any help would be greatly appreciated.

Thanks