You cannot download files from a SharePoint Web site when Forefront Security for SharePoint is installed, and you receive an "Unknown Error" error message

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Article ID: 968163 - View products that this article applies to.
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SYMPTOMS

When you try to download a file from a SharePoint server that is running Microsoft Forefront Security for SharePoint, the file may be blocked. This may also occur if you try to upload the file.

In this case, you may also receive the following error message on the Web console:
Unknown Error

CAUSE

This problem occurs because SharePoint does not provide sufficient time for Forefront Security for SharePoint to scan a file.

RESOLUTION

To resolve this issue, install Forefront Security for SharePoint Service Pack 3 (SP3). For more information, click the following article number to view the article in the Microsoft Knowledge Base:
967995 Description of Forefront Security for SharePoint with Service Pack 3

STATUS

Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.

Properties

Article ID: 968163 - Last Review: July 1, 2009 - Revision: 1.0
APPLIES TO
  • Microsoft Forefront Security for SharePoint
  • Microsoft Forefront Security for SharePoint Service Pack 1
  • Microsoft Forefront Security for SharePoint Service Pack 2
Keywords: 
kbexpertiseinter kbbug kbqfe kbsurveynew kbprb KB968163

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