For specific software like Abaqus that utilize SolidSquad, Error 6 sometimes traces back to a missing system pointer for the license. Adding it manually can bypass the initialization bug. Google Groups Search for Edit the system environment variables in the Windows 11 taskbar and open it. Click on the Environment Variables button at the bottom. System Variables

Use or VirtualBox to run a Windows 11 VM with all security features disabled . Install your software inside the VM. Error 6 will not occur there because the VM’s virtualized hardware is less restrictive.

However, for a good paper-like resource to understand and resolve this issue, I recommend these that collectively cover the underlying causes: