Microsoft aktualisiert ab April 2017 die Sicherheitsfunktionen für TLS-/SSL-Verschlüsselung für Azure Web Apps.

Hier die originale Information von Microsoft:

To ensure we provide the most modern TLS/SSL cryptography and to help improve web app security, we’re updating the cipher suites for your web apps on TLS/SSL.

We’re constantly working to provide cutting-edge security for customers using the Web Apps feature in Azure App Service. We’ll be rolling out the updated cipher suites over 4 weeks, beginning on April 3, 2017.

You can check whether the clients that access your web apps will still function correctly by testing them against https://appsvcssl.trafficmanager.net/. If your client is compatible, you will receive a 200 HTTP status with an “SSL client test complete” message.