The latest Sage 100 Supported Platforms Matrix ( October 20, 2023 ) notes that Sage no longer supports Sage 100 running under Windows Server 2012 R2.

This is due to Microsoft ending support for both Windows Server 2012 and Windows Server 2012 R2 on October 10, 2023. As noted in the Microsoft support page:

Windows Server 2012 and Windows Server 2012 R2 will end on October 10, 2023. After this date, these products will no longer receive security updates, non-security updates, bug fixes, technical support, or online technical content updates. If you cannot upgrade to the next version, you will need to use Extended Security Updates (ESUs) for up to three years. ESUs are available for free in Azure or need to be purchased for on-premises deployments. Microsoft has guidance for both cloud and on-premises solutions.

Sage currently supports Sage 100 running under the following Microsoft server operating systems:

• Windows Server 2022 Standard and Datacenter
• Windows Server 2019 Standard and Datacenter
• Windows Server 2016 Standard

A Cautionary Note About Windows 11 Pro and Enterprise

Sage notes that Windows 11 Pro and Enterprise are not recommended for Sage 100 32-bit due to unresolved issues in the Microsoft Print Server. The suggestion is to use the 64-bit version of Sage 100 under Windows 11 or Windows 10 for Sage 100 32-bit installations.

For more information about one issue people have experienced running 32-bit Sage 100 on Windows 11 workstations see – Daily Transaction Register hangs on “Processing Daily Transaction Register”