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Endpoint communication using TLS 1.2

In this article, you will learn how to troubleshoot endpoint communication issues when using Transport Layer Security (TLS 1.2).

Applications and services that are written by using WinHTTP for Secure Sockets Layer (SSL) connections, that use the WINHTTP_OPTION_SECURE_PROTOCOLS flag, can't use TLS 1.1 or TLS 1.2 protocols. This is because the definition of this flag doesn't include these applications and services.

You can fix this issue through an update that will add support for a DefaultSecureProtocols registry entry, that allows the administrator to specify which SSL protocol is acceptable when the WINHTTP_OPTION_SECURE_PROTOCOLS flag is used. For more information, refer to the following Microsoft KB article.

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