The latest update from Microsoft may affect your Chreos and, therefore, impact on your business.

If you have any computers using XP of Server 2003 versions of Windows (or earlier) then you need to pay close attention to the below message.

Microsoft has recently released a major update to Windows 10.  As part of the update Windows is now much stricter with what data can be shared across a network, the effect of this is that Windows 10 machines may no longer be able to talk to database servers running on OLD Windows versions.

Windows XP
If you run ChreosServer on Windows XP (which Microsoft dropped support for on April 8 2014)  you will not be able to access the Chreos database after upgrading your Windows 10 machines.  There may be a work around for this but we are not aware of it and recommend people move ChreosServer to a newer machine ASAP.  

Technically, such communications happen through the Windows Server Message Block (SMB) protocol.  Microsoft has now blocked them from happening over SMB 1.  Both machines have to be using SMB 2 or SMB 3 but these two are not available for Windows XP.

Windows Server 2003
If you run ChreosServer on Windows Server 2003 or older (out of support since July 14 2015)  you will not be able to access the Chreos database after upgrading your Windows 10 machines.  It may be possible to get Chreos working by installing the SMB 2 (or newer) protocol.