We currently don’t have the Teams client installed on all PCs and don’t have the right Outlook version in VDI to work with the Teams client (which doesn’t work well with Windows 7 VDI). We will work on rolling out the correct Teams/Outlook mix soon. For right now the best way to create a Teams meeting and invite external users is to do it from Outlook webmail.
Open Okta – Click on Microsoft Office 365 Mail (Outlook)
Click on Calendar
Click on New event
Fill out meeting invite as you would normally, including selecting external participants from your address book and make sure to select Add online meeting – Teams Meeting
Once you save the event and reopen it you see the Teams meeting information added to the event
External invitees can attend these meetings without having a Teams account and without having the Teams client installed. Microsoft might prompt them to install the Teams client application, but they should just select “Join on the web instead”