Tip: Troubleshooting TLS/SSL issues

What can we do, if Internet pages are not accessible due to TLS issues and the browser only displays error messages because communication via TLS/SSL fails?


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Microsoft has addressed this issue for ASP-NET in conjunction with HTTP web calls. As soon as a target URL is called via https, TLS/SSL is used and errors can occur.

IE_SSL_error.png
(TLS/SSL error, Source: Microsoft)

If the browser cannot verify the SSL certificates of a website accessed via https, it displays a corresponding warning and refuses to display them (see figure above). In two articles, a Microsoft employee shows how to perform a troubleshooting and how to narrow down the cause.

Troubleshooting TLS / SSL communication problems when making HTTP web request in ASP.NET Part 1

Troubleshooting TLS / SSL communication problems when making HTTP web request in ASP.NET Part 2


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