Hello,
I am working on a freshdesk-app to integrate Business Central with Freshdesk. I am unable to get the Oauth2 access token from Microsoft in local because i can’t add the local redirect URL with the query params to App registrations in Azure.
Is it not possible to locally test apps that integrate with Mirosoft’s Oauth2-Authorization?
Hi @re2918,
Welcome to our Freshworks developer community! 
If the third-party system doesn’t allow a localhost URL, you could run FDK with the command, fdk run --tunnel. It will generate an HTTPS domain that can be accessed over the internet. It will look like the following.
Establishing ngrok tunnel. Please wait...
Tunnel Open. Tunnel URL: https://e1cd-xxxxxxxxxxxxxxxxxxxxxxxxxxx-3f5b.ngrok.io
Starting local testing server at http://*:10001/
Append 'dev=true' to your Freshdesk account URL to start testing
e.g. https://domain.freshdesk.com/a/tickets/1?dev=true
Quit the server with Control-C.
To simulate product, app setup, and external events, visit - http://localhost:10001/web/test
Populating test data with events found in the app
To test the installation page, visit - http://localhost:10001/custom_configs
The tunnel domain (without any port) can be used in place of the localhost domain and port for local testing of OAuth 2.0.
Hi @Raviraj,
Thank you, i’m excited to be here.
Thank you for your answer. Microsoft’s Oauth system does allow localhost URLs. I did however find out what my problem was: I assumed that the whitespace after “?callback=” was there by mistake and deleted it. Here’s how i made it work:
First i clicked on authorize of my app:
I then copied the redirect url shown in the microsoft error:
I encoded the part after ?callback= (including the whitespace in the beginning encoded to %20):
Lastly i added the encoded part back to the full url and entered it into Azure App registrations:
I hope this helps someone else who has a similar problem
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