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This issue occurs when an OfficeScan (OSCE) client is installed on Windows 2008 R2 Terminal server.

To resolve this issue, disable TCP chimney offload:

  1. Open the command prompt with administrative credentials.
  2. Type the following command and press ENTER:

    netsh int tcp set global chimney=disabled

For more information, visit this Microsoft article: Information about the TCP Chimney Offload, Receive Side Scaling, and Network Direct Memory Access features in Windows Server 2008.