FIX: "Error: Invalid Adler32 checksum encountered" error when you receive a compressed AS2 message in BizTalk Server

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Article ID: 2492615 - View products that this article applies to.
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SYMPTOMS

When you use Microsoft BizTalk Server to receive a compressed Applicability Statement 2 (AS2) message, an error message that resembles the following might be logged in the Application log:

Event Type: Error
Event Source: BizTalk Server 2009 EDI
Event Category: None
Event ID: 8133
Description:
The AS2 Decoder encountered an exception during processing. Details of the message and exception are as follows: AS2-From:"<AS2-From party>" AS2-To:"<AS2-To party>" MessageID:"<Message ID>" MessageType: "unknown" Exception:"Decompression failed while processing a compressed AS2 message. Error: Invalid Adler32 checksum encountered."
Note The event source value may vary depending on what version of BizTalk Server you use.

CAUSE

This issue occurs because the Adler32 checksum value is stored separately in two chunks when you receive a compressed AS2 message. Therefore, BizTalk Server does not read the value correctly.

RESOLUTION

Cumulative update information

BizTalk Server 2006 R2
The hotfix that resolves this issue is included in cumulative update package 4 for BizTalk Server 2006 R2 SP1.

For more information about how to obtain the cumulative update package, click the following article number to view the article in the Microsoft Knowledge Base:

2682056Cumulative update package 4 for BizTalk Server 2006 R2 SP1

BizTalk Server 2010
For more information about how to obtain the cumulative update package, click the following article number to view the article in the Microsoft Knowledge Base:
2497789 Cumulative update package 1 for BizTalk 2010

BizTalk Server 2009
The hotfix that resolves this issue is included in cumulative update package 2 for BizTalk Server 2009.

For more information about how to obtain the cumulative update package, click the following article number to view the article in the Microsoft Knowledge Base:
2497794 Cumulative update package 2 for BizTalk Server 2009

STATUS

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

REFERENCES

For more information about BizTalk Server hotfixes, click the following article number to view the article in the Microsoft Knowledge Base:
2003907 Information about BizTalk Server hotfixes
For more information about the "Invalid Adler32 checksum encountered" error message, visit the following MSDN website:
General information about the "Invalid Adler32 checksum encountered" error message

Properties

Article ID: 2492615 - Last Review: April 12, 2012 - Revision: 3.0
APPLIES TO
  • Microsoft BizTalk Server 2009 Standard
  • Microsoft BizTalk Server 2009 Branch
  • Microsoft BizTalk Server 2009 Developer
  • Microsoft BizTalk Server 2009 Enterprise
  • Microsoft BizTalk Server Branch 2010
  • Microsoft BizTalk Server Developer 2010
  • Microsoft BizTalk Server Enterprise 2010
  • Microsoft BizTalk Server Standard 2010
  • Microsoft BizTalk Server 2006 R2 Branch Edition
  • Microsoft BizTalk Server 2006 R2 Developer Edition
  • Microsoft BizTalk Server 2006 R2 Enterprise Edition
  • Microsoft BizTalk Server 2006 R2 Service Pack 1
  • Microsoft BizTalk Server 2006 R2 Standard Edition
Keywords: 
kbqfe kbfix kbsurveynew kbexpertiseadvanced kbbiztalk2006r2presp2fix KB2492615

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