The most frequent technical cause is a conflict with Visual Basic for Applications (VBA) 7.1 . If a newer version of VBA (often bundled with SOLIDWORKS 2021 SP2 or newer) is already on the system, older SOLIDWORKS Installation Managers fail to recognize it and trigger Error 6 during the process.

If you are encountering this error, follow these steps to troubleshoot the license server:

Disable real-time protection before extracting the SSQ .rar or .zip file.

Any guidance would be appreciated.