I installed Symantec Endpoint Protaction Manager on my Windows 2003 R2 SP2 64x os and it was working fine for few days. Suddenly it stop working and tried all suggesion in https://forums.symantec.com/syment/board/message?board.id=endpoint_protection11&message.id=3654

I verified ports and changed port. even I uninstall IIS, Java, SEPM and reboot server and reinstall on different port but I am getting same error in scm-server-o.log file

2008-08-26 09:53:34.584 SEVERE: ================== Server Environment ===================
2008-08-26 09:53:34.584 SEVERE: os.name = Windows 2003
2008-08-26 09:53:34.584 SEVERE: os.version = 5.2
2008-08-26 09:53:34.584 SEVERE: os.arch = x86
2008-08-26 09:53:34.584 SEVERE: java.version = 1.5.0_14
2008-08-26 09:53:34.584 SEVERE: java.vendor = Sun Microsystems Inc.
2008-08-26 09:53:34.584 SEVERE: java.vm.name = Java HotSpot(TM) Server VM
2008-08-26 09:53:34.584 SEVERE: java.vm.version = 1.5.0_14-b03
2008-08-26 09:53:34.584 SEVERE: java.home = C:\Program Files (x86)\Symantec\Symantec Endpoint Protection Manager\jdk\jre
2008-08-26 09:53:34.584 SEVERE: catalina.home = C:\Program Files (x86)\Symantec\Symantec Endpoint Protection Manager\tomcat
2008-08-26 09:53:34.584 SEVERE: java.user = null
2008-08-26 09:53:34.584 SEVERE: user.language = en
2008-08-26 09:53:34.584 SEVERE: user.country = US
2008-08-26 09:53:34.584 SEVERE: scm.server.version = 11.0.2020.56
2008-08-26 09:53:34.600 INFO: Server startup
2008-08-26 09:53:36.069 FINE: checkProcessState: checking...
2008-08-26 09:53:36.131 FINE: checkProcessState: The process status has been checked.
2008-08-26 09:53:36.819 SEVERE: ================== StartClientTransport ===================
2008-08-26 09:53:36.881 SEVERE: Unknown Exception in: com.sygate.scm.server.servlet.StartupServlet
java.lang.Exception: HTTP 500 Internal Server Error, URL: http://localhost/secars/secars.dll?action=34
 at com.sygate.scm.common.communicate.Communicator.getRequestInputStream(Communicator.java:548)
 at com.sygate.scm.server.util.ClientTransportHelper.startClientTransport(ClientTransportHelper.java:72)
 at com.sygate.scm.server.servlet.StartupServlet.init(StartupServlet.java:100)
 at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:880)
 at org.apache.catalina.core.StandardWrapper.load(StandardWrapper.java:768)
 at org.apache.catalina.core.StandardContext.loadOnStartup(StandardContext.java:3484)
 at org.apache.catalina.core.StandardContext.start(StandardContext.java:3710)
 at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1148)
 at org.apache.catalina.core.StandardHost.start(StandardHost.java:697)
 at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1148)
 at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:311)
 at org.apache.catalina.core.StandardService.start(StandardService.java:450)
 at org.apache.catalina.core.StandardServer.start(StandardServer.java:2213)
 at org.apache.catalina.startup.Catalina.start(Catalina.java:484)
 at org.apache.catalina.startup.Catalina.execute(Catalina.java:371)
 at org.apache.catalina.startup.Catalina.process(Catalina.java:134)
 at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
 at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
 at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
 at java.lang.reflect.Method.invoke(Method.java:585)
 at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:151)
com.sygate.scm.common.communicate.CommunicationException: Unexpected server error. ErrorCode: 0x10010000
 at com.sygate.scm.common.communicate.Communicator.getRequestInputStream(Communicator.java:569)
 at com.sygate.scm.server.util.ClientTransportHelper.startClientTransport(ClientTransportHelper.java:72)
 at com.sygate.scm.server.servlet.StartupServlet.init(StartupServlet.java:100)
 at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:880)
 at org.apache.catalina.core.StandardWrapper.load(StandardWrapper.java:768)
 at org.apache.catalina.core.StandardContext.loadOnStartup(StandardContext.java:3484)
 at org.apache.catalina.core.StandardContext.start(StandardContext.java:3710)
 at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1148)
 at org.apache.catalina.core.StandardHost.start(StandardHost.java:697)
 at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1148)
 at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:311)
 at org.apache.catalina.core.StandardService.start(StandardService.java:450)
 at org.apache.catalina.core.StandardServer.start(StandardServer.java:2213)
 at org.apache.catalina.startup.Catalina.start(Catalina.java:484)
 at org.apache.catalina.startup.Catalina.execute(Catalina.java:371)
 at org.apache.catalina.startup.Catalina.process(Catalina.java:134)
 at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
 at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
 at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
 at java.lang.reflect.Method.invoke(Method.java:585)
 at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:151)

Has anyone else had same problem and solved it.

Thanks