Previously, in response to questions about a potential competition problem similar to the one that Netscape faced, VMware officials have said that the virtualization vendor is in a different situation. Its products have been adopted by many enterprises and are deeply integrated into systems and business processes. Moreover, VMware believes that it has a technology edge over Microsoft.

Krishnamurti said VMware isn't commenting about any possible legal action against Microsoft.

Two attorneys who followed the Microsoft antitrust case said that if VMware is thinking about going to court, it will face a difficult path.

The bottom line is, "can you really show that [Microsoft's behavior] is having a significant anticompetitive effect?" said Andy Gavil, an antitrust professor at the Howard University School of Law in Washington. "Can you show that Microsoft has no real business justification for the particular subject of the complaint?"

VMware would have to demonstrate that Microsoft's actions are having a significant impact on competition, increasing costs and lowering quality, Gavil added. "They would have a lot to prove," he said.