Thank you for this great idea.
Found a little bug in GPO Path:
the “List of managed add-ins” is located under:
“…/Microsoft Outlook xxxx/”, not under “…/Microsoft Office xxx/”
In my case the full path was:
User Configuration/Policies/Administratives Templates/Microsoft Outlook 2013/Miscellaneous/List of managed add-ins
But it works. Now my OLook uses the “full url” when sending the OL-Invitation. Not very nice, but functionally.
The only thing i’m missing is the sync between OL-Calendar and teams-calendar. Hope this will be fixed soon