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Transport agents are not loaded when you try to upgrade Exchange Server 2010

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Symptoms

Assume that customized Exchange transport agents are deployed in a Microsoft Exchange Server 2010 environment. When you try to upgrade Exchange Server 2010 to Service Pack 1 (SP1) or a later service pack, the transport agents are not loaded. Additionally, an event that resembles the following is logged in the Application log:

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Cause

This issue occurs because the transport assemblies are updated in each service pack for Exchange Server 2010. For example, the Microsoft.Exchange.Data.Transport and Microsoft.Exchange.Data.Common assemblies are updated.

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Resolution

To resolve this issue, install the following update rollup:
2866475 Description of Update Rollup 2 for Exchange Server 2010 Service Pack 3

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Status

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

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More Information

For more information about transport agents, go to the following Microsoft website:
General information about transport agents

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Keywords: kbqfe, kbfix, kbexpertiseinter, kbsurveynew, kb

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Article Info
Article ID : 2882627
Revision : 1
Created on : 1/7/2017
Published on : 11/22/2013
Exists online : False
Views : 202