Quest Software, Inc. (Nasdaq:QSFT) is pleased to announce it has once again been selected by Microsoft Corporation as its Global Independent Software Vendor (ISV) Partner of the Year. The award was announced on July 11 at the Microsoft Worldwide Partner Conference 2007 in Denver, Colorado. Quest also won this award in 2004 and was a finalist in 2005 and 2006.

Awards were presented in a number of categories, with winners chosen from a pool of more than 1,800 entrants worldwide. Quest was recognized for superior technology and innovation. The Microsoft Global ISV Partner of the Year Award is given to the global ISV partner that has demonstrated outstanding leadership and excellence in partnering with Microsoft and its customers.

?Quest has demonstrated outstanding leadership and excellence, building strong relationships with Microsoft and our customers,? said Robert Deshaies, vice president, U.S. Partner Group, Microsoft. ?In the past year, Quest saw its Windows business grow faster than any other part of the company for the third year in a row, with Quest managing over 20 million AD users, licensing over 20 million Exchange users, and migrating over 1.5 million competitive users to Exchange. Quest has made a long term bet on the Microsoft platform.?

The Windows Management group at Quest Software works closely with the Microsoft field organization and Microsoft product development groups to build, market and sell solutions that enhance Microsoft's Active Directory, SharePoint Products and Technologies, Exchange Server and Windows Server management and migration solutions, as well as products for managing the Microsoft SQL Server environment, .NET application management and extending Active Directory, Systems Center Operations Manager and Systems Center Configuration Manager to Unix and Linux.

?We are honored to receive this award from Microsoft,? said Steve Dickson, vice president and general manager, Windows Management at Quest Software. ?This recognition reflects the deep relationship between our two companies and acknowledges our successes building solutions that enhance Microsoft products for our customers. Every year we continue to expand our Windows offerings, most recently with our investment in developing tools to manage SharePoint Products and Technologies and also tools to integrate and manage Windows PowerShell; we look forward to collaborating with Microsoft to develop innovative solutions in the future.?

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 50,000 customers worldwide meet higher expectations for enterprise IT. Quest's Windows Management solutions simplify, automate and secure Active Directory, Exchange and Windows, as well as integrate Unix, Linux and Java into the managed environment. Quest Software can be found in offices around the globe and at www.quest.com.

Quest, Quest Software, the Quest logo are trademarks of Quest Software, Inc. in the U.S.A. and certain other countries. All other trademarks referenced herein are the property of their respective owners.

Web Links Referenced in this Release:

Quest Software, Inc. ? www.quest.com

Windows Management ? www.quest.com/windows_management

Applications ? www.quest.com/application_management

Databases ? www.quest.com/database_management

Windows Infrastructure ? www.quest.com/windows_management

Quest Software, Inc.
Lora Deeds, 614-726-4660
Lora.Deeds@quest.com