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I cannot work with Flow REST API

I am trying to create a new flow programmatically using the "Power Automate Web API":


I am stuck at composing the HTTP request, particularly when getting the organization ID.

One person said that I should get the organization id using this way:


However like I said in that explanation, it did not work OK for me.


In my case for example my user is  and in the enviroments part, the default organization is for example "My company.something".


Before creating a flow I am trying with this basic request:


So I tried using (using this example)

but in C# I get  "The remote name could not be resolved"

I tried with:



but in this case the HttpWebRequest.Create method raises an exception because of the space in the domain name.


So here I am trapped... I have access to another organization and with that other organization it works fine... if I use the same code I get the error 401 (unauthorized) that is OK because I am not using the good ID but at least the domain is found!


I know there is a way to get the organization data using this link:

and if I use my organization data, the browser cannot find the domain... but using the other organization I have access to, it works OK!


So maybe I am missing something?


Also one important thing that may matter is that if I go to, go to Settings/Services & add-ins, and then I click on Dynamics CRM I end up with an error saying:

no instances found for this user ID


You have signed in with a user ID that cannot log into Dynamics 365. Make sure that you have an active Dynamics 365 subscription and that your Dynamics 365 user account has a defined security role.


Could it be that as the web API I am using is

then it really needs Dynamics 365 (although I try to use Flow) and this is the source of the problem?




Accepted Solutions

I found out that I had to create the database for that environment in the Flow admin center (going to the environment)

View solution in original post

Community Support
Community Support

Hi @pabloglombo ,


Have you take a try with an account that have an active Dynamics 365 subscription?


Best regards,



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

I found out that I had to create the database for that environment in the Flow admin center (going to the environment)

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