TLS 1.2 on Windows Server 2003 and XP

Question

I have a WCF service hosted in IIS that uses transport security. I need to limit the TLS version to 1.2.

I found that TLS 1.2 is supported on Windows Server 2008 and Windows 7.

Can I limit the use of TLS to version 1.2 for Windows Server 2003 for the server and Windows Vista and XP for the client too? Is 1.2 supported for these older OS?

Answer 1

TLS 1.1 and TLS 1.2 are not supported on Win Server 2003, XP, or Vista. Applications that use OS services for TLS will not be able to use TLS 1.1 or 1.2 on these platforms.

If you have an application, browser, or something else that processes its own TLS, then it can use TLS 1.1 or 1.2.

http://msdn.microsoft.com/en-us/library/windows/desktop/aa380512%28v=vs.85%29.aspx