Microsoft KB Archive/922221

= Antigen incorrectly detects WinZip files as corrupted compressed files =

Article ID: 922221

Article Last Modified on 2/8/2007

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APPLIES TO


 * Microsoft Antigen for Exchange
 * Microsoft Antigen for SMTP Gateways
 * Sybari Antigen 8.0 for Microsoft Exchange
 * Sybari Antigen 8.0 for SMTP Gateways
 * Sybari Antigen 7.5 for Microsoft Exchange
 * Sybari Antigen 7.5 for SMTP Gateways

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SYMPTOMS
When you send an e-mail message that contains a WinZip attachment, Antigen for Exchange or Antigen for SMTP Gateways incorrectly detects the WinZip file as a corrupted compressed file.



CAUSE
This problem occurs if the following conditions are true:
 * The WinZip file is compressed by using the Maximum (enhanced deflate) option in WinZip 9.0.
 * The Delete Corrupted Compressed Files option is enabled in Antigen.



WORKAROUND
To work around this problem, disable the Delete Corrupted Compressed Files option in Antigen. To do this, follow these steps:
 * 1) Use an account that has administrative permissions to log on to the computer that is running Antigen.
 * 2) Click Start, and then click Antigen Administrator.
 * 3) In the Connect to Server dialog box, click Browse, click the computer to which you want to connect, and then click OK.
 * 4) In the Antigen Administrator dialog box, click Settings, and then click General Options.
 * 5) In the right-pane, disable the Delete Corrupted Compressed Files option under Scanning.



STATUS
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the &quot;Applies to&quot; section.



MORE INFORMATION
The third-party products that this article discusses are manufactured by companies that are independent of Microsoft. Microsoft makes no warranty, implied or otherwise, regarding the performance or reliability of these products.

Additional query words: security scan

Keywords: kbtshoot kbprb KB922221

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