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CORS ORIGIN problem with Office365 in AngularJS 6. #7125


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I am implementing Office365 login auhtentication in SinglePageApplication-(.NET Core + Angular6) but I am getting below error... "Access to XMLHttpRequest at 'https://login.microsoftonline.com/{tenantid}/oauth2/token' from origin 'http://localhost:4200' has been blocked by CORS policy: Response to preflight request doesn't pass access control check: No 'Access-Control-Allow-Origin' header is present on the requested resource."

I am able to access this url "https://login.microsoftonline.com/{tenantid}/oauth2/token'" from post man and i am getting the required result .

Could you please help me to resolve this issue?

Thanks in advance.


4 Answer(s)
  • User Avatar
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    maliming created
    Support Team

    How did you implement it?

  • User Avatar
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    qbd created

    I updated below code in appsettings.json file,

    "App": { "ServerRootAddress": "http://localhost:22742/", "ClientRootAddress": "http://localhost:4200/", "CorsOrigins": "http://localhost:4200,http://localhost:49152,https://login.microsoftonline.com" },

    I created Office365Login.component.js file and implemented below code

    let options_: any = { client_id: client_id, client_secret: client_secret, redirect_uri: redirect_uri, code: authorization_code, grant_type: authorization_code,

    headers: new HttpHeaders({
                "Access-Control-Allow-Origin": "*",
                "Access-Control-Allow-Methods": " POST, OPTIONS",
                "Access-Control-Allow-Headers": "Origin, Content-Type, X-Auth-Token",
                "Content-Type": "application/x-www-form-urlencoded",
        })
    

    }; //Here we are calling the office365 token api. this.http.request("post", "https://login.microsoftonline.com/{tenantid}/oauth2/token", options).subscribe(result => { console.log(result); });

  • User Avatar
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    qbd created

    We are not able to find the solution for cross origin issue. If any one knows please let us know.

    Thanks in advance!

  • User Avatar
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    qbd created

    We found the solution for single page application (AngularJS), any way we deicded to implement on server side for security reason.

    Thanks all for response.