When a Windows Server 208 is running older versions of Symantec Endpoint Protection 11 or Symantec Antivirus 10.2, user may experience performance issues for network shares, or intermittent loss of connectivity to SMB shares. We’re hoping we can help you avoid a costly and time consuming support incident by making this issue more visible to help you plan your deployments. “If you’re running older versions of SEP 11 and SA 10.2 you should get the solution from Symantec. Symantec confirms that this’s a known issue and there’re updates to resolve the problem. For more information, see Symantec Knowledge Base article about this issue. For information about Symantec support for Endpoint Protection 11, visit Symantec Support site. Please note: If you’re unable to upgrade promptly or remove the software, Symantec urges you to contact their technical support to determine if there’re any workarounds available to you,” explained Windows Server blog.