I just had a look at the current installation line I use and it hasn't changed much since I posted that last one-liner. It's been a while now but I do recall that as soon as I started specifying the GROUPID the machines started registering perfectly. I haven't had a failure-to-register since then. I also remember some confusion over the email account used to create the policy. Our team had several logons and I had to be careful to use the right one when modifying the policy - and that tied in with the GROUPID. My memory is a bit hazy now but I do remember that this was important, especially when adding computers to the right group. At one point we had computers registering in a completely different account/group and that's why we couldn't find them. This is my current one-liner for version 14.1.9025.0 (in a .CMD file): msiexec /i "%~dp0TeamViewer_Host.msi" /qn APITOKEN=XXXXXX-XXXXXXXXXXXXXXXXX CUSTOMCONFIGID=xxxxxxx DESKTOPSHORTCUTS=0 IMPORTREGFILE=1 ASSIGNMENTOPTIONS="--grant-easy-access --alias %COMPUTERNAME% --group-id gxxxxxxxxx --reassign"
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