Businesses that skip Windows Vista and upgrade their computers directly from the XP operating system to Windows 7 could expose themselves to security risks and other problems, Microsoft says in a new white paper.

Bypassing Vista could have "implications for security, support, and regulatory compliance and reduce flexibility in the face of changing business requirements," writes Microsoft VP Mike Nash, in the paper.

Specifically, Nash says that businesses that wait for Windows 7 -- set for release in late 2009 or early 2010 -- to upgrade from XP could find themselves using outdated applications that don't employ proper security safeguards or are no longer supported.

They also won't get the advantage of new security technologies and other improvements that Microsoft embedded in Vista, Nash says. "By not deploying Windows Vista, it means missing out on the proven benefits such as better security, productivity, search, mobility, manageability and infrastructure optimization," Nash says in the paper, which is titled "The Business Value Of Windows Vista."