Quest Spotlight on Active Directory Enhances Monitoring and Troubleshooting by Delivering New Integration with Microsoft Operations Manager 2005.

SAN DIEGO -- New Version of Spotlight Offers Consolidated View of Diagnostic and Performance Information and Greater Detail within MOM Operations Console

At the Microsoft Management Summit 2006, Quest Software Inc. (Nasdaq: QSFT) today announced Quest(R) Spotlight on Active Directory 6.5. This new version is closely integrated with Microsoft Operations Manager (MOM) 2005 to speed problem detection and resolution by giving customers a single consolidated view of all Active Directory performance issues. Spotlight also provides greater detail and problem context to the MOM Operations Console. This award-winning product has been selected by more than 1,000 customers worldwide, representing millions of Active Directory accounts supported by Quest solutions.

"MOM 2005 is a comprehensive event and performance monitoring solution that provides application and operating system knowledge to help customers identify, understand, and resolve potential IT problems before they occur," said Eric Berg, director of product management for the Windows and Enterprise Management Division at Microsoft Corp. "With the new release of Spotlight on Active Directory, Quest further streamlines the process of root cause determination and facilitates quicker resolution by feeding additional context into the MOM Operations Console. Customers benefit from one consolidated view of proactive diagnostic and performance information."

Additional new capabilities in this release include:

--Expanded monitoring of the Active Directory service, including monitoring of schema consistency, site configuration best practices, and Flexible Single Master Operations (FSMO) best practices.

--Proactive diagnostic alerts on failed directory and file replication, Domain Name Service (DNS) errors, and time synchronization to the MOM Operations Console.

--Population of the MOM 2005 knowledge base with additional context around errors encountered with key Active Directory processes such as File Replication Service (FRS), DNS, and FSMO role placement.

"It is critical to an organization that Active Directory is always available, so when problems occur, they must be resolved quickly," said Jackson Shaw, senior director of product management, Quest Software. "Busy administrators don't have time to check multiple products or consoles -- they want a single source for all Active Directory status, performance and alerting activity. Together, MOM 2005 and Spotlight offer this through a consolidated view of proactive diagnostic data and performance information. IT professionals appreciate all that Spotlight has to offer."

Spotlight on Active Directory also continues to offer valuable capabilities including:

--Web-based performance trending reports, summarizing current and historical status of Active Directory.

--Complete context around alerts, informing administrators not only that an analysis test or rule failed, but also why it failed and what caused it to fail.

--Color-coded graphical status display of Active Directory showing administrators when a test fails, as well as when it passes.

Pricing and Availability

North American pricing for Quest Spotlight on Active Directory begins at $6 U.S. per enabled user. Version 6.5 is expected to be available next week, and information can be found at http://www.quest.com/spotlight_on_active_directory/.

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's Windows Management solutions simplify, automate and secure Active Directory, Exchange and Windows, as well as integrate Unix and Linux into the managed environment. Quest Software can be found in offices around the globe and at www.quest.com.

Quest and Quest Software are registered trademarks of Quest Software, Inc. The Quest Software logo and all other Quest Software product or service names and slogans are registered trademarks or trademarks of Quest Software, Inc. All other trademarks and registered trademarks are property of their respective owners.

Forward-Looking Statements

This release may include predictions, estimates and other information that might be considered forward-looking statements, including statements concerning the availability and market acceptance of our new version of Spotlight on Active Directory. These statements are based on current expectations and assumptions that are subject to risks and uncertainties. Actual results could differ from those anticipated as a result of various factors, including the impact of economic conditions on our customers, variations in the size and timing of customer orders; competitive products and pricing; rapid technological change; risks associated with the development and market acceptance of new products; disruptions caused by acquisitions of companies and/or technologies including risks relating to integration of the combined companies; risks associated with international operations; and the need to attract and retain qualified personnel. For a discussion of these and other related risks, please refer to our recent SEC filings, including our Annual Report on Form 10-K for the year ended December 31, 2005. Readers are cautioned not to place undue reliance on these forward-looking statements, which speak only as of the date thereof. We undertake no obligation to update forward-looking statements to reflect events or circumstances after the date thereof.