Managing Windows Dedicated
New Windows Dedicated Servers are provisioned with Plesk Onyx.
Legacy servers (Basic, Standard, Elite, and Pro) are provisioned with the Windows Server 2012 R2 OS and Plesk 12.5.
Older provisions of Windows dedicated servers may have Plesk 11, 11.5, 12, 12.5 or Onyx.
New Windows shared hosting subscriptions are provisioned with Plesk Onyx.
Windows shared servers on old hardware (will be phased out as of 2019) are using the Windows Server 2008 R2 OS and Plesk 11.5.