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Article ID: 2522999 - Last Review: September 4, 2013 - Revision: 3.0

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This update provides the Junk Email Filter in Microsoft Office Outlook 2007 with more current definitions. This update was released on April 12, 2011. These definitions evaluate whether an unread email message should be treated as a junk email message.


Update details

This update replaces the following previously released update:
2508979  ( ) Description of the Office Outlook 2007 Junk Email Filter update: March 8, 2011

Installation details

How to obtain and install the update

The following file is available for download from the Microsoft Download Center:
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Download the update package now.

For more information about how to download Microsoft support files, click the following article number to view the article in the Microsoft Knowledge Base:
119591  ( ) How to obtain Microsoft support files from online services
Microsoft scanned this file for viruses. Microsoft used the most current virus-detection software that was available on the date that the file was posted. The file is stored on security-enhanced servers that help prevent any unauthorized changes to the file.

Known issue

Windows Update returns error code 646 or error code 0x80070646.

This issue occurs if Office updates are not installed successfully from Microsoft Update. Or, this issue occurs if these updates are not installed successfully when you try to manually install them by using the /quiet and /passive flags. This issue occurs because of a corrupted system environment variable or because of failed permission escalation.

For more information about how to resolve this issue, visit the following Microsoft website:

How to determine whether the update is installed

This update contains files that have the versions that are listed in the following table.
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File nameFile versionFile sizeDateTimePlatform
Outlfltr.dat12.0.9902.5053,610,43217-Mar-201106:41Not Applicable

To determine the version of the files that are installed on the computer, follow these steps, as appropriate for the operating system that you are running.

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How to uninstall this update

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Information for administrators about .msp files

This update consists of a full-file Microsoft Windows Installer (.msp) file. The .msp file is packaged in a self-extracting executable file. The following .msp file is distributed in this update:

Click here to view or hide detailed information

The Office System TechCenter contains the latest administrative updates and strategic deployment resources for all versions of Office. For more information about the Office System TechCenter, visit the following Microsoft website:
IT support and resources for Microsoft Office (

Applies to
  • Microsoft Office Outlook 2007
atdownload kbsurveynew kbexpertisebeginner KB2522999
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