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Power Platform Community / Forums / Power Automate / OAuth2 without providi...
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Answered

OAuth2 without providing client secret

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Posted on by 17

Hello,

Is there a way to create a OAuth2 authorization connector without providing client_secret. The field is mandatory and if I provide a dummy value the connection "looks" successful but does not include Authorization in the header.

 

Our Oauth2 is set up for implicit grant and the work flow works fine in postman where I can just leave the field Client Secret blank.

 

Thanks

 

 

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  • Verified answer
    Sutherland Profile Picture
    Microsoft Employee on at

    Hello x001nx
    We understand that you would like to use implicit grant authorization in Custom connector
    https://datatracker.ietf.org/doc/html/rfc6749#section-1.3.2 
    Note that only Authorization Code Grant flows and On-Behalf-Of flows support refresh tokens. Implicit Grants and Client Credentials Grants do not support refresh tokens, so may not be used to authenticate Custom Connectors.

    Official Doc Reference:
    https://support.microsoft.com/en-us/topic/verifying-oauth-configuration-for-custom-connectors-ceadbd1d-5a44-5615-208b-029f7ffe6107 

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    Johnnyg_0-1628413127184.png

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