It is not supported on Windows 8.1 and requires Windows 10 (64-bit) for stability. Risks of Pirated Software

Using "cracked" software is highly discouraged for several reasons: SOLIDWORKS 2019 Update frequently asked questions

If already installed, you can find your serial number in the Windows Registry under HKEY_LOCAL_MACHINE\Software\SolidWorks\Licenses\Serial Numbers . System Requirements for 2019

To run the 2019 version effectively, your system should meet these Prerequisites : 8GB minimum; 16GB or more recommended. Disk Space: 2GB for installation; 5GB recommended. GPU: 2GB or more of dedicated GPU RAM.

The process is generally handled automatically via online activation during the installation of SolidWorks 2019 .