Microsoft small business knowledge base

Article ID: 919448 - Last Review: January 24, 2013 - Revision: 6.0


When you try to update the Microsoft Windows Defender definition set, you may receive an "error 0x8024002b" error message. This problem occurs when your computer is running Software Update Services (SUS) 1.0.


This problem occurs because SUS 1.0 is not a supported delivery mechanism for Windows Defender definitions.


To work around this problem, install Microsoft Windows Server Update Services (WSUS). Then, deploy Windows Defender.

For a step-by-step guide to getting started with Microsoft Windows Server Update Services (WSUS), visit the following Microsoft Web site: (
To download Windows Server Update Services 3.0 SP1, visit the following Microsoft Web site: (
To learn more about Microsoft Windows Server Update Services, visit the following Microsoft Web site: (
Note If you still cannot resolve the problem, you might want to ask someone for help or contact support. For information about how to contact support, visit the following Microsoft Web site: (

More information

For more information about problems that you may experience with Windows Defender, click the following article numbers to view the articles in the Microsoft Knowledge Base:
836941  ( ) You may encounter temporary connection-related errors when you use Windows Update or Microsoft Update to install updates
924123  ( ) Error message when you update Windows Defender definitions in Windows 2000: "0x80240022 - the wrong diskette is in the drive."
919448  ( ) Error message when you try to update the Windows Defender definition set: "error 0x8024002b"
818018  ( ) How to troubleshoot problems connecting to Windows Update or to Microsoft Update
906602  ( ) How to troubleshoot common Windows Update, Microsoft Update, and Windows Server Update Services installation issues
To see frequently asked questions about Windows Defender, visit the following Microsoft Web site: (

If these articles do not help you resolve the problem or if you experience symptoms that differ from those that are described in this article, search the Microsoft Knowledge Base for more information. To search the Microsoft Knowledge Base, visit the following Microsoft Web site: (
Then, type the text of the error message that you receive or type a description of the problem in the Search Support (KB) field.

Applies to
  • Windows Defender
kbresolve kbdefenderrtwswept kbtshoot KB919448
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