Authentification error - ASP.NET web API and Angular 7 on IIS server

Question

In my web application hosted on IIS server (.Net web API & Angular 7), I am using SAML authentification and I have a problem when I try to log in the website for the first time, it shows me the error bellow:

If I press Ctrl+F5 or I referesh it works perfectly.

PS: I added all configurations needed of headers in my web.config like this :

    <customHeaders>
            <remove name="X-Powered-By" />
            <add name="Access-Control-Allow-Origin" value="*"/>
            <add name="Access-Control-Allow-Credentials" value="true" />
            <add name="Access-Control-Allow-Headers" value="*" />
            <add name="Access-Control-Allow-Methods" value="GET, POST, DELETE, PUT, OPTIONS" />
   </customHeaders>

PS2: In my local environement I don't have this issue.

Thanks in advance for your help/advice.

samwu · Accepted Answer · 2021-10-01 07:44:08Z

1

You can try to configuring iis CORS module according to the content in this link:

https://blogs.iis.net/iisteam/getting-started-with-the-iis-cors-module.

If it still does not work, then open your IIS manager and select the website -> Bindings, change the port to your custom port, for example: 8090.

answered Oct 1, 2021 at 7:44

samwu

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2 Comments

Soukaina EL HAYOUNI Over a year ago

Hi @samwu, the first solution dosen't work for me, and the second one I can't try it (I have "https" so the default port is 443 can't change it).

samwu Over a year ago

Then you can try to see if there are related error messages in the Event viewer.

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