32 Bit Office:
%SystemRoot%\SysWOW64\regsvr32.exe /n /i:user %LocalAppData%\Microsoft\TeamsMeetingAdd-in\1.0.22349.4\x86\Microsoft.Teams.AddinLoader.dll
64 Bit Office:
%SystemRoot%\System32\regsvr32.exe /n /i:user %LocalAppData%\Microsoft\TeamsMeetingAdd-in\1.0.22349.4\x64\Microsoft.Teams.AddinLoader.dll