FIX: Invalid message error if the header field is longer than 1,000 characters in BizTalk Server

Applies to: BizTalk Server 2013 BranchBizTalk Server 2013 DeveloperBizTalk Server 2013 Enterprise


When you use Microsoft BizTalk Server to process email messages from Microsoft Exchange Server, you may encounter an error stating that a message is invalid. This issue may occur if the message has a header field that's longer than 1,000 characters. 


Cumulative update information

The fix that resolves this issue is included in Cumulative Update 3 for BizTalk Server 2013.


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