Assume that you try to access a network file share that resides on a server that is running Windows Server 2003, 2008, or 2008 R2. However, in this situation, the file sharing connection drops intermittently after a while, and then the network share becomes unresponsive.
When this problem occurs, the following events are logged in the event log:
Event ID: 4226 Source: Tcpip Message:TCP/IP has reached the security limit imposed on the number of concurrent (incomplete) TCP connect attempts.
Event ID: 2022 Source: server Message: The server was unable to find a free connection number times in the last number seconds.
Note Event 2022 may occur every 20 to 30 seconds.
This problem occurs when Windows Server is running certain versions of Endpoint Protection 11 or Symantec Antivirus 10.2. Some file filter drivers, such as Srtsp.sys or Srtsp64.sys, may cause this problem.
To resolve this issue, follow the instructions that are provided by Symantec to upgrade the software to the latest version of Symantec Endpoint Protection 11.0.4202.75 (MR4 MP2) or Symantec Antivirus. For more information, visit the following Symantec Knowledge Base article:
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For more information about intermittent file sharing connectivity from various clients to a Windows Server 2008 server, visit the following Microsoft Web site:
For more information see the following Microsoft Knowledge base articles:
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
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