While VMware has made changes to their free offerings recently, older versions often had a free tier for single-server use.

If you are looking for a crack because you are a student or a hobbyist, there are much better, legal ways to access VMware technology:

vCenter 4.1 was released in 2010. In the world of IT, that is ancient history. Rather than searching for risky cracks for obsolete software, we recommend migrating your workloads to a modern, secure platform. This ensures your data stays protected and your hardware runs at peak efficiency.