Planned for fixing.
Based on the investigation the solution assumes the followig prerequisites:
- Windows Server 2008 R2
- The fix enabling TLS 1.2 in .Net Framework 3.5 is installed beforehand.
AX2009 supports .Net Framework 3.5 only which doesn’t support TLS 1.2.
There is a fix that enables TLS 1.2 in .Net Framework 3.5: https://support.microsoft.com/en-us/help/3154518/. But it’s applicable for Windows Server 2008 R2 only.
Therefore if customers use AX2009 with an earlier version of Windows, then using TLS 1.2 for AX2009 has only one possible way – migrate to Windows Server 2008 R2 and then install the patch for .Net Framework 3.5 which enables TLS 1.2.