Connect onedrive return bad request

[neal-learnformula]

I try to upload documents from onedrive, after authorization, it will redirect to the page "~/onedrive/callback" and the page shows "bad requset". I have already registered my app and added the callback url as oauth redirect uri on the Microsoft account. Also I can successfully connect to google and dropbox.

[thmclellan]

In the Azure portal under App registrations, try setting up the callback as domain.com/connect/microsoft/callback. I found I had to choose the "Web" style redirect URI for the authorization code flow. (If you choose PWA then you'll get a PKCE error). More background at https://docs.microsoft.com/en-us/onedrive/developer/rest-api/getting-started/graph-oauth?view=odsp-graph-online#code-flow.

[neal-learnformula]

@thmclellan Thanks for your reply. Under my registered application, I have gone to the authorization and add the web redirect uri domain.com/connect/microsoft/callback, but it still shows bad request after authorization. Are there any other settings?

[thmclellan]

@neal-learnformula After a lot of troubleshooting I was able to get it working yesterday running on a Heroku server (running standalone companion similar to the example), but I had errors when running the companion server on localhost, I might have misconfigured it.

I found it helped to set COMPANION_DEBUG=true, look for hints in the companion server logs, and to run Chrome Network tools to watch the step by step going through the authorization code flow. This article was also useful: https://developer.okta.com/blog/2018/04/10/oauth-authorization-code-grant-type

On the Azure portal, under the web URI redirect configuration, I have these settings.

Hope that helps - good luck!

[thmclellan]

One last thing... you might have this already, but you need to set API permissions for the Microsoft Graph API under Azure app registration like this:

[neal-learnformula]

@thmclellan Thank you so much for your help and hope it's working this time.