SharePoint Guest Users API Access - Unauthorized
Hello, we've build an Azure AD App that uses MSAL to authenticate against SharePoint. The auth flow works fine, till we try to access SharePoint resources with guest users. We've tried several solutions and configurations but we always get the answere: "Exception of type 'Microsoft.IdentityModel.Tokens.AudienceUriValidationFailedException' was thrown." Is there any policy that does not allow guest users to access sharepoint through the sharepoint api? Direct access to sharepoint works without a problem. Thanks in advance MichaelImplementing RefreshToken for AuthenticationManager.GetAppOnlyAuthenticatedContext (OfficeDevPnP)
Hi all - I recently stumbled upon a small issue with OfficeDevPnP AuthenticationManager. I have a long-running console program using GetAppOnlyAuthenticatedContext() to build SharePoint Online context for me, but after roughly 70 minutes I start getting 401 errors for my queries. That's understandable - access token lifespan is 75 minutes. However, I couldn't find any method to get a RefreshToken, and prolong the time my session would be valid... I proceeded to fork the repository and see if I could implement a reauthentication flow into EnsureToken, since it sets the accesstoken to null when it's about to expire (which is smart in a sense, but doesn't help me here), but I couldn't get a RefreshToken by using the TokenHelper (it's null in the response). Is there something I'm missing, or is implementing a reauthentication using a RefreshToken impossible for a console app here? Should I change authentication method? My app is quite often going to run for hours at a time, so it would be handy to find a way to enable the sessions to be more long-lived... :) Thanks for any feedback or ideas. Cheers!
