web
You’re offline. This is a read only version of the page.
close
Skip to main content

Announcements

News and Announcements icon
Community site session details

Community site session details

Session Id :
Power Platform Community / Forums / Power Automate / Custom Connector with ...
Power Automate
Unanswered

Custom Connector with C# custom Code always returns error 403 Forbidden

(1) ShareShare
ReportReport
Posted on by 39

Hello everyone,

 

I am trying to create a custom connector and to change the request's content with the avail of the "Code" functionality. 

 

However, it does not work. I have been trying for days to send a request to one of my Web Services, which works perfectly and can be accessed without any issue outside of Power Platform. When enabling custom code, the connector will always return a 403 forbidden error no matter what.

 

In the end I decided to copy and paste the code in the Microsoft Documentation example, hoping that maybe it was something I was doing wrong, but apparently even Microsoft's own code does not work and returns that same 403 Forbidden error with an empty body. 

 

So I thought, that is not possible, my web service is well made, it works, and it is made in a way that it would return a proper error message in order to allow me to debug what is going on. So it appeared clear to me that that response was not returned by MY web service, but it is certainly coming from somewhere else. 

 

So the questions are, is there any way to understand what is going on? Why do I receive a forbidden 403 Error inside the Connector Test tab without any body whatsoever? Which resource is receiving my data and answering?

 

Thanks in advance,

have a lovely day.

Categories:
I have the same question (0)

Under review

Thank you for your reply! To ensure a great experience for everyone, your content is awaiting approval by our Community Managers. Please check back later.

Helpful resources

Quick Links

Introducing the 2026 Season 1 community Super Users

Congratulations to our 2026 Super Users!

Kudos to our 2025 Community Spotlight Honorees

Congratulations to our 2025 community superstars!

Leaderboard > Power Automate

#1
Haque Profile Picture

Haque 283

#2
David_MA Profile Picture

David_MA 256 Super User 2026 Season 1

#3
Expiscornovus Profile Picture

Expiscornovus 225 Most Valuable Professional

Last 30 days Overall leaderboard