Applies to: Windows Server 2008R2
The "Pure Storage VSS Hardware Provider Guide Version 1.0.2" has the following note:
"Windows Server 2008 R2 by default does not support TLS 1.1 or higher. Manually enable TLS 1.1 or TLS 1.2 on the Windows Server."
To manually enable TLS 1.1 and/or TLS 1.2 install the update and follow the instructions to modify the registry from Microsoft KB3140245 (https://support.microsoft.com/en-us/kb/3140245).