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This issue can occur if folder permissions are not correct on the "Symantec Endpoint Protection Manager" folder.See this article for more information: "Which communication ports does the Symantec Endpoint Protection Manager 11.x use?".Verify that no other process is listening on TCP ports 8443, 9090 or 8005.
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If there is already an application listening on one of the TCP ports the console is configured to use it can also cause the service to fail.Verify that the "Symantec Embedded Database" service is running and that the dbsrv9.exe process is listening on TCP port 2638.If configured to use the embedded database verify that it is running and reachable.Verify the connection to the SQL database from the SEPM machine.If configured to use a Microsoft SQL server and the database is down or the machine unreachable this can also cause the SEPM service to shut down.Once this is completed the Symantec Endpoint Protection Manager service should start properly again. Open up the "Management Server Configuration Wizard" from the start menu and walk through the "Reconfigure the management server" wizard to make sure all settings for the database are correct.
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