"Please wait for the System Event Notification Service" error message when users try to log on or log off a terminal server that is running Lync 2010

Symptoms

When users try to log on or log off a terminal server that is running a Microsoft Lync 2010 client, the Windows session stops responding.  Additionally, the users receive the following error message:
"Please wait for the System Event Notification Service"

Cause

This issue occurs because the Lync 2010 client uses a legacy Windows API to obtain the Windows logon or logoff event notifications.

Resolution

To resolve this issue, install the following cumulative update.
2701664 Description of the cumulative update package for Lync 2010: June 2012

References

For more information about the ISensLogon interface, go to the following Microsoft website:
Properties

Article ID: 2709670 - Last Review: Jun 16, 2012 - Revision: 1

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