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ankur745's avatar
ankur745
Copper Contributor
Oct 03, 2023

Geeting CORS in API while calling inside Teams APP TAB

Getting CORS in API while calling inside Teams APP TAB Calling API in Teams App TAB const u = `${domain}/api/login.json`; fetch(u, requestOptions) .then(resp => { } While calling API w...
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microsoft teams
ankur745's avatar
ankur745
Copper Contributor
Oct 05, 2023
Hey basically I want to call 3rd party API.. so how i can simply call API?
Prasad_Das-MSFT's avatar
Prasad_Das-MSFT
Icon for Microsoft rankMicrosoft
Oct 11, 2023

ankur745 - 

Teams Platform/SDK doesn't do anything to interfere with AJAX requests made by apps. CORS is standard mechanism implemented by all browsers that limits cross-origin network calls. If an app is trying to make a cross-origin network request, then the backend API must allow it first by responding correctly to the OPTIONS call. Here is an example:

 

 

There is documentation on CORS here:

https://developer.mozilla.org/en-US/docs/Web/HTTP/CORS

 

Could you please provide us Fiddler trace of the request, so that we will be able to point out what the exact issue is?

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