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Microsoft officially published the Security Bulletin Summary for April 2011



This bulletin summary lists security bulletins released for April 2011.

With the release of the security bulletins for April 2011, this bulletin summary replaces the bulletin advance notification originally issued April 7, 2011. For more information about the bulletin advance notification service, see Microsoft Security Bulletin Advance Notification.

For information about how to receive automatic notifications whenever Microsoft security bulletins are issued, visit Microsoft Technical Security Notifications.

Microsoft is hosting a webcast to address customer questions on these bulletins on April 13, 2011, at 11:00 AM Pacific Time (US & Canada). Register now for the April Security Bulletin Webcast. After this date, this webcast is available on-demand. For more information, see Microsoft Security Bulletin Summaries and Webcasts.

Microsoft also provides information to help customers prioritize monthly security updates with any non-security updates that are being released on the same day as the monthly security updates. Please see the section, Other Information.
  Microsoft Security Bulletin Summary for April 2011