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Https connection error of Flow with web Service

Hello. I have a web service which works fine calling it from browser, (returning some json), but it can not establish a connection with a flow HTTP action with the same url.

The application is registered on azure portal and has uploaded public key for a self-signed certificate for openssl.


Microsoft Flow.png

Community Support
Community Support

Hi @kpavlidis ,


Per my certain research, I found that error message “Could not establish trust relationship for the SSL/TLS" could be caused by:

  • You’re using an invalid certificate
  • The certificate wasn’t issued by a trustworthy authority.

Please check the following doc for resolution:


Best regards,




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

So while it is working from browser without problems, flow does not accept this self-signed certificate? If this is the problem how do i create a self-signed certificate that will be acceptable?


Also where to install the cert since it is a flow?

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