Solved: Custom connectors no longer able to do a single HTTP request

Custom connectors no longer able to do a single HTTP request

Hi,

I've noticed my custom connectors return a 500 error with the following message :

A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond {ip address}

This message also happens when I call the custom connector's action in "Test" section.

I tried to execute the same request with the step "HTTP". (Same authentification parameters, same url and query parameters...) It executed correcly. So I deduced the problem wasn't my external service denying access to Power Automate.

Then I tried to change the Connection created. It didn't solve the problem.

Finally, I tried to just request a single GET url that didn't require any kind of authentication. I created a new Custom connector and after defining it, I executed it with the "Test" section. I still managed to get the error.

Everything worked fine for 2 years until today.

It seems to happen to any custom connector I'm creating. Was there any update from Microsoft that might be the cause ? Or am I missing something to solve the issue ?

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