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Source: Microsoft Support
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For a Windows Server 2003 or 2008 or 2008 R2 based DHCP server where Symantec Endpoint Production 11.0 or Symantec Antivirus 10.2 is installed, client computers may be unable to get IP addresses from this DHCP server.
If we statically assign an IP address to the client machine, it functions normally on the network..
This issue occurs because of a problem with Symantec Endpoint Protection 11.0.
To resolve this issue, follow the instructions that are provided by Symantec to upgrade the software to the latest version of Symantec Endpoint Protection or Symantec Antivirus. For more information, visit the following Symantec Knowledge Base article:
For more information see the following Microsoft Knowledge base articles:
948732 Network shares become unresponsive after some time on a Windows Server 2003-, 2008 or 2008 R2-based computer running Symantec Endpoint Protection prior to 11.0.4202 (MR4-MP2) or Symantec Antivirus 10.2, and you receive an error messagehttp://support.microsoft.com/kb/948732
961293 Unable to access Shares "The specified network name is no longer available" when Symantec Endpoint Protection prior to 11.0.4202 (MR4-MP2) or Symantec Antivirus 10.2 are installed on a Windows 2003, 2008 or 2008 R2 Server
961654 A file sharing connection to a Windows Server 2008-based server drops unexpectedly if the server has Symantec Endpoint Protection prior to 11.0.4202 (MR4-MP2) or Symantec Antivirus 10.2 installed
948732 Network shares become unresponsive after some time on a Windows Server 2003-, 2008 or 2008 R2-based computer running Symantec Endpoint Protection prior to 11.0.4202 (MR4-MP2) or Symantec Antivirus 10.2, and you receive an error message
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