Azure API Powerapps connection suddenly not working anymore - Invalid CORS request

[hermans25]

Hello.,

Without any change to the API connector, my Powerapp is not working anymore:

It comes back with a 403 message

Status:  Forbidden (403)

Body: Invalid CORS request

Does anybody have a possible solution?

Is this a Powerapps or Azure API management problem?

(the API itself works fine, outside Powerapps..)

thanks

Erik

[v-xida-msft · Accepted solution]

Hi @hermans25 ,

Could you please share a bit more the error message within your app?

Do you create a custom connector based on your Azure API within your PowerApps?

Based on the error message that you provided, I think you have faced a 403 forbidden error within the request you sent from your app.

Please check if you have sent a proper/valid request from your app (check if you have specified a valid request within your custom connector action). In addition, also please check if you have enough permission to access the URL request you sent from your app.

Please consider take a try to re-create a new custom connector based on your Azure API within your PowerApps, then specify a valid requst within the custom connector action, then check if the issue is solved.

More details about customizing a connector within PowerApps, please check the following article:

https://docs.microsoft.com/en-us/powerapps/maker/canvas-apps/register-custom-api

Best regards,

[hermans25]

Dear support team,

Indeed I create a custom connector as described in https://docs.microsoft.com/en-us/powerapps/maker/canvas-apps/register-custom-api .

Already at testing the connector I get the error message "Invalid CORS request".

Althoug we did not change anything on the API side (Spring) , as well in Azure API management, this error suddenly occurred.

Re-creating the custom connector and connections (several times) did not solve the problem.

Since I can test the API with a request directly from the web-browser and since my Powerapps request was formerly also working, I am quite sure it is a "valid request".

Hereby the screen shots of the error message.

Hopefully, you can help ? did something change in Powerapps itself?

thanks

Erik

I have all permission rights (key) to access the API, and in a webbrowser, all direct links with the API are working fine.

[hermans25]

PS. strange is that the published version of the Powerapp (in Production) is still working fine.

So it seems something changed on Friday February 22....

[hermans25]

Problem has been solved. It seemed an authorization issue on the API side.