MicrosoftJustAnotherITGuy We found in our environment via trial and error that the REST calendar sharing preview only applies to instances of Office on the 'Monthly Channel (Targeted)' subscription. That's how it is for now until they decide to release the feature to regular Monthly Channel subscription.
If you have Office 365 with Targeted Release, you're good to go. If not, here's what we did to set it up:
- Set AAD user accounts 'StagedRolloutOne' on the ReleaseTrack attribute (Set-MsolUser -UserPrincipalName [UPN] -ReleaseTrack "StagedRolloutOne")
- Uninstall Office 365 from workstations assigned to those AAD accounts set for Targeted Release ("StagedRolloutOne")
- Install Office 365
- Verify by opening Outlook > File tab > Office Account > About Outlook and it should read "Monthly Channel (Targeted)." You should also see Version 1907 (or 1908 at this point).
- Set REST calendar sharing by going to Account Settings > [Primary Exchange Account] > More Settings > Advanced > Office 365 Features - check "Turn on shared calendar improvements (preview)."
We are testing select accounts with high activity on calendar scheduling. Here's one of the Office Support articles with detail on setting this up:
Outlook calendar sharing updates
Hope this helps.
