This is a known Windows bug. Some users fix it by copying the netapi32.dll file into the SolidWorks directory while disconnected from the internet Server Issues:
: Type the desired text into the property manager box. Solidworks 2023 Solidsquad
: If the server fails to start, ensure no other Flexnet services (like those for AutoCAD or MATLAB) are conflicting on the same port. : Some security software may flag the server_install.bat or the replaced This is a known Windows bug