Add a Redirect OAuth URI
1. In the Microsoft Azure portal, log in to a B2C tenant as the Global Administrator.
2. Under Azure services, click Azure AD B2C.
3. From the left pane, select Authentication.
4. Click Add URI and add the following URI: https://<ThingWorx_FQDN>:<port>/Thingworx/oauth2_authorization_code_redirect. Make sure that you replace the angular brackets with specific FQDN and port information from your ThingWorx instance.
5. Click Save.