Applications that use the Cryptography API cannot validate an X.509 certificate in Windows Server 2003

Cause

========

One such case is Windows Server 2003 and the SHA-2 family of algorithms. Windows Server 2003does not understand SHA-2 family of algorithms.

https://support.microsoft.com/en-us/help/938397/applications-that-use-the-cryptography-api-cannot-validate-an-x.509-certificate-in-windows-server-2003