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Enable TLS 1.1/1.2 in windows RRS feed

  • Question

  • In our project, we are using XML RPC client that is based on wininet. The proxy server in our project allows only TLS 1.2 requests.

    When we tested with windows 7, we found that the proxy is not allowing the requests from XML RPC client. The XML RPC client is not using TLS v1,2. After following the steps in the below link, then XML RPC client is able to communicate with out any problem. 

    https://support.microsoft.com/en-au/kb/3140245

    One of the steps mentioned in the above link is: Add "DefaultSecureProtocols" key in registry and set the value to 0x00000A00(to enable TLS v1.1/1.2)

    The browser installed in that PC is IE8.

    We also tested in another windows 7 PC where IE 11 is installed. In this PC,  the XML RPC communication works even without adding "DefaultSecureProtocols" key in registry. 


    Do we need to add  "DefaultSecureProtocols" key in registry if IE11 is not installed?

    How wininet is able to use TLSv1.2 when IE 11 is installed but failed when IE8 is installed? 


    Wednesday, September 14, 2016 1:14 PM

Answers