- Edited
KevinTheJedi
The authorization/token endpoint URLs are correctly v2 by default, just the API URL (Resource Details Endpoint) is by default 1.0. Although setting it to 2.0 doesn't help either.
I think the plugin should be updated to use Graph API/scope since Outlook V2.0 REST endpoint is also deprecated and will be decommissioned in November 2022. Source: https://docs.microsoft.com/en-us/previous-versions/office/office-365-api/api/version-2.0/use-outlook-rest-api
So the URLs in scope should be https://graph.microsoft.com/IMAP.AccessAsUser.All https://graph.microsoft.com/POP.AccessAsUser.All https://graph.microsoft.com/SMTP.Send, and Resource Details Endpoint/User Details URL should be https://graph.microsoft.com/v1.0/me.