Server 2012 r2 & Server 2008 is supported

Server 2016 by my guess will be supported next version

Amanda- At this time Windows 2016 has completed testing, so it is not supported. Unfortunately, I do not have any information on when the testing will be completed. But as new operating systems are tested and approved, we update our System Requirement. Please see ID:45396 System Requirements: Sage BusinessWorks Accounting current version.
Thanks,
Coleen

Any news on Microsoft Windows Server 2016 testing?

We are looking at replacing our server shortly.

Vince- Article #81520 Is Sage BusinessWorks compatible with Windows Server 2016? dated 2/8/2017 indicates that Windows Server 2016 should work with both V2015 and V2017 without an issue. The only thing that has been noted is that the server must be restarted after installing the Sage BusinessWorks product.
Thanks,
Coleen

Thanks.
I know this will be a top question/answer for this year

Yes. Sage BusinessWorks Version 2017 and later are supported on Windows Server 2016. The only thing that is required is that the server must be restarted after installing the Sage BusinessWorks product. See article #81520 "Is Sage BusinessWorks compatible with Windows Server 2016?"
Thanks-
Coleen