Aliso Viejo, Calif., June 1, 2006 – Quest Software, Inc. (Nasdaq: QSFT) today announced that it had been contacted by the Securities and Exchange Commission regarding an informal inquiry relating to Quest’s past stock option grant practices.  Quest will cooperate fully with the SEC’s inquiry.

About Quest Software, Inc.
Quest Software, Inc. delivers innovative products that help organizations get more performance and productivity from their applications, databases and Windows infrastructure. Through a deep expertise in IT operations and a continued focus on what works best, Quest helps more than 18,000 customers worldwide meet higher expectations for enterprise IT. Quest Software can be found in offices around the globe and at www.quest.com. 

Editor's Note: Quest Software maintains a development office in Halifax.