Microsoft EDGE - The security certificate required to access this resource is invalid.

Question

We get the following error in Microsoft EDGE in our Dev environment when starting our ASP.NET application hosted in IIS 8 on a Windows 2012 R2 server.

Error: XMLHttpRequest: Network Error 0x800c0019, Security certificate required to access this resource is invalid.

See below for more information about implementation and environments. Our application runs on two different secure ports ( HTTPS ). In IIS both applications are hosted as separate web applications and use the same certificate. The certificate is created using OpenSSL SHA2 encryption , and it is added to the secure certificate store.

In Microsoft EDGE, the first time you download our application, it issues a warning about a certificate warning, and we allow you to continue. After loading the page with the click of a button, we call the API using an AJAX call and place it on another port.

In EDGE it does not allow continuing this API and throws the above error.

In Chrome and IE 11 , we also get the same warning, but from there it allows the following API to be executed.

Any help would be accepted to fix the problem.

Answer 1

If you know that your certificate is valid, this may happen if you have a tool running in the background somewhere that captures SSL connections through a proxy server, such as Fiddler .

Since such a tool effectively uses a man-in-the-middle attack to report requests, the warnings are "normal." It’s easy to forget that they are also running.