# Troubleshooting

This document covers some of the common issues you may encounter when running this sample.

## You get a 403 Forbidden response when you attempt to create a subscription

Make sure that your app registration includes the required permission for Microsoft Graph (as described in the [Register the app](README.md#register-the-app) section). 

## You get a build error when you issue dotnet run demo command

Ensure that you have copied the appsettings.json file into a new or renamed appsettings.Development.json file as directed in the [Update appsettings.Development.json](README.md#update-appsettings-development-file)
