Configuring the Application Registration

After creating the application registration, you then need to select the link “Redirect URI’s” marked in the red box below.  

Now add two additional URI’s: 

• /Soap/services
  Use: 
  https://YourLink-devaos.cloudax.dynamics.com/soap/services
• /Soap/Services/MobService
  Use: 
  https://YourLink-devaos.cloudax.dynamics.com/soap/services/MobService

See the next screenshot. Remember to insert your actual link.  

Also make sure that the types are “Public client (mobile & desktop)”.