Symptoms

You cannot start the Exchange Management Console (EMC) or the Exchange Management Shell (EMS) in a Microsoft Exchange Server 2010 Service Pack 1 (SP1) environment. Additionally, you receive the following error message:

The type initializer for 'Microsoft.Exchange.Configuration.Tasks.Task' threw an exception.

Cause

This issue occurs because an InvalidCastException exception occurs when the Exchange server reads the CustomerFeedbackEnabled flag. The exception causes the w3wp.exe process to crash.

Resolution

To resolve this issue, install the following update rollup:

2608646 Description of Update Rollup 6 for Exchange Server 2010 Service Pack 1

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 the EMC, visit the following Microsoft website:

General information about the EMCFor more information about the EMS, visit the following Microsoft website:

General information about the EMSFor more information about the CustomerFeedbackEnabled flag, visit the following Microsoft website:

General information about the CustomerFeedbackEnabled flag

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