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Helper IV
Helper IV

Calling WCF Service from Microsoft flow

Can we call WCF service which connects to SQL On premise db to execute stored procedure and get some info back from microsoft flow HTTP action. Any limitations regarding authentications or any other issue that can occur here ?

Community Support
Community Support

Hi @manjotsingh057,


Do you want to call WCF service to execute a SQL Server stored procedure with HTTP action of Microsoft Flow?


I think we could call WCF service to execute a SQL Server stored procedure with HTTP action. The HTTP action only support five Authentication type currently: None, Basic, Client Certificate, Active Directory OAuth, Raw.


When you create a HTTP action to make a call to WCF service within one authentication type of above types, you may face with a authentication failure, you need to check if you have provide proper credentials for the http request.


Best regards,


Community Support Team _ Kris Dai
If this post helps, then please consider Accept it as the solution to help the other members find it more quickly.

Hi Kris,


I have created a Web API which is deployed on our development server.

I am able to call it successfully in browser, using Javascript, fiddler or even PostMan app but when i am trying to call it using MS flow it says "internal server error".


I tried to call it using HTTP action but it says invalid uri.


URL I am trying to hit : https://server/api/ControllerName/id


Anything i am missing or doing wrong here ? 

Super User
Super User

Hi @manjotsingh057 


You can use the HTTP post as described in this article:


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