The Microsoft Exchange File Distribution service consumes large amounts of memory in an Exchange Server 2010 environment

Symptoms

In a Microsoft Exchange Server 2010 environment, the Microsoft Exchange File Distribution service (MSExchangeFDS) consumes large amounts of memory on a server that is running Exchange Server 2010 and has the Client Access server (CAS) role installed. When this occurs, the server that has the CAS role installed experiences slow performance.

Cause

This issue occurs because the replication handler for offline address books (OABs) holds a parameter that consumes large amounts of memory during OAB synchronization.

Resolution

To resolve this issue, install the following update rollup:

2661854 Description of Update Rollup 2 for Exchange Server 2010 Service Pack 2

Status

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

More Information

For more information about offline address books, visit the following Microsoft website:

General information about offline address books

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