You can also install Teams as part of Microsoft 365.Should have gone with better option names really. The former controls per machine or per user the latter controls whether the installer appears in add/ remove programs or not. Note that ALLUSER=1 and ALLUSERS=1 are independent. This is if you want to install on a non-VDA machine of course, not something Microsoft recommends. Workaround is to create a HKEY_LOCAL_MACHINE\SOFTWARE\Citrix\PortICA prior to the install to trick Teams.exe. You can’t be sneaky and do an ALLUSER=1 install on non-VDA machines as Teams.exe detects and blocks this (learnt via this blog post).With per-machine automatic updates is disabled.Do this for Citrix and other VDI (see a few bullet points below). ALLUSER=1 – install per-machine rather than per-user (which is the default as mentioned above).ALLUSERS=1 – the installer appears in add/ remove programs for all users and those with admin rights can uninstall.To stop that use GPO or pass an option to the MSI installer ( OPTIONS="noAutoStart=true"). This takes about 500MB of space per user.It also updates Teams so once installed we don’t need to do any manual updates. Notice the program is actually called Update.exe.The actual name of this seems to be %LocalAppData%\Microsoft\Teams\Update.exe -processStart "Teams.exe".This is what keeps Teams up to date for the user and also launches it. Thus when a user signs in the Teams.exe executable launches and installs an installer into their AppData\Local folder.The installer creates a registry entry under HKLM\Software\WOW6432Node\Microsoft\Windows\CurrentVersion\Run to launch the Teams.exe executable it put in Program Files.Alternatively get them from or from (has more variants).Download link: for 64-bit version for 32-bit version.C:\Program Files (x86)\Teams Installer on 64-bit operating systems and C:\Program Files\Teams Installer on 32-bit operating systems.The Teams MSI installer installs to the Program Files location.Stuff that’s already available on the Internet but just putting it here so I have one place to refer to whenever someone asks me on this Will keep updating this post as I go along…
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