I am creating an app which will integrate with Outlook. The app consists of a back-end which will periodically sync calendar data with another system. To do this I want to use the REST api.
Based on instructions found here I believe I should use the client authorization flow to authenticate.
Next I go to the registration portal here to register my app. As platform I add a 'Native Application'. Next I must enter a custom redirect URI. This is where things go wrong.
I try to enter http://localhost:8080/register for local testing. I get the following error:
Your URI must be in the format of {scheme}://{domain}/{path}, and be limited to 255 characters in length.
Basically any valid URI is denied. Interestingly if I try test://localhost:8080/register it is accepted.
Am I misunderstanding something? Is this a bug on Microsoft's page?
For
client_credentialsthere isn't a callback URI. You're passing the client secret as your credentials and you don't need a Web or Native application defined.