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Answer by TheHvidsten for Authentication failed exception with MailKit OAuth2.0
It seems that what you want is not possible at this time. See this Github issue for details.Basically, using ConfidentialClientApplicationBuilder can only use scopes defined as "API permissions" on...
View ArticleAuthentication failed exception with MailKit OAuth2.0
I'm using the following code to get an access token and connect to the mail folder:var confidentialClientApplicationBuilder =...
View Article