While SOLIDWORKS 2016 is not officially supported on Windows 11, users have reported varying levels of success running it by using specific activation procedures and compatibility settings. Official support for Windows 11 only begins with SOLIDWORKS 2022 SP2. Activation and Installation on Windows 11
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Activating SolidWorks 2016 on Windows 11
Summary: While it is tempting to find a quick "activator" fix, these tools are often unsafe. The most reliable way to use SOLIDWORKS 2016 today is through a Windows 10 virtual environment or by moving to a newer, supported version of the software.