Hi guys, we recently rolled out a newer CU of the Workspace App Client with the MicrosoftTeamsVDIPlugin parameter, to ensure a working moveother to Slimcore. I noticed that for most of the Clients it is still not working, the plugin is showing in appwiz.cpl and the following Appx-packages are found when running "Get-AppxPackage -AllUsers | ? {$_.Name -match "Slim|Teams"}": Microsoft.Teams.SlimCoreVdiFwk.win-x64.2026.12 Microsoft.Teams.SlimCoreVdiHost.win-x64 Microsoft.Teams.SlimCoreVdiFwk.win-x64.2026.22 UDP is also enabled aswell as all the Virutal Channels allower for MSTeams, we also use the latest Teams-version. After further troubleshooting I found in the ProcessExplorer, that the .dll for the MsTeamsPluginCitrix.dll isn't being loaded whatsoever, after further checking i noticed that the .dll is missing ENTIRELY. Even after deploying the standalone installation of the MSTeamPlugin the .dll is just not being created at all. On my client for a reference it is there and working fine, however i installed the Workspace App manually in the past, so I wouldn't use this as a reference. Any ideas - or did somebody face this in the past?

Which AV do you have on the endpoint?

2507 CU2 CWA? what are your install parameters?

i remember having similar issues with no .dll present a year or so ago on some devices. If you uninstall the "Microsoft Teams VDI Citrix Plugin" and then install the MSI for it, does it exist then?

We are using Windows Defender, however I don't see any blocks in the Event Viewer We are using CWA 26.3.1.194 (2603.1) -> i meant the Current Release / not Cumulative, my bad. Uninstalling the Plugin and installing over MSI didn't do the trick. These are our install parameters: /cleaninstall /silent /noreboot InstallEPAClient=N Installzoomplugin=N /includeSSON /installMSTeamsPlugin ENABLE_SSON=Yes AutoUpdateCheck=Disabled EnableCEIP=False ADDLOCAL=ReceiverInside,ICA_Client,USB,DesktopViewer,AM,SSON,SelfService,WebHelper STORE0=XXX