> Source: [sk142313](https://support.checkpoint.com/results/sk/sk142313)

# sk142313 - Endpoint Security Client fails to connect to the Endpoint Security Server

| Property | Value |
|----------|-------|
| Solution ID | sk142313 |
| Date Created | 2018-12-17 |
| Last Modified | 2020-07-06 |
| Technical Level | Advanced |
| Products | Endpoint Security |
| Versions | Cloud, E89.X, E88.X, R82.10, R82, R81.20 |

## Symptoms

- * Endpoint Security Client fails to connect to the Endpoint Security Server.
* In %DADIR%\\logs\\cpda.log on client machine, the following error can be seen:  

  ```
  
  DATE TIME  14f4 Sending request: HTTP, body size: 1611, Proxy: DIRECT, useCache: No, connTimeout: 20000, sslTranTimeout: 0, Url:
  http://X.X.X.X:80/cp/connectionPoint/syncreq (CHTTPCall_curl::sendReq_internal) 
  DATE TIME  14f4 Send succeeded, Got HTTP response body size: 154 bytes (CHTTPCall_curl::sendReq_internal) 
  DATE TIME  14f4 HTTP response code: 500 (CHTTPCall_curl::sendReq_internal) 
  DATE TIME  14f4 ---ERROR--- Unexpected HTTP response code: 500 (CHTTPCall_curl::sendReq_internal) 
  DATE TIME  14f4 ---ERROR--- Response without escape chars (possible truncated):  
  Server Exception: TICKET_NUMBER = XXXXXXXXX. A server exception occurred. Look for this TICKET_NUMBER in the log of the last contacted server for details.
   (CHTTPCall_curl::sendReq_internal)
  DATE TIME  14f4 HTTP_ERROR_RANGE: HTTP server error code (CHTTPCall_curl::sendReq_internal)
  DATE TIME  14f4 Server error. Not checking more proxies (CHTTPCall_curl::sendReq)
  DATE TIME  14f4 ---ERROR--- Failed to send request (or problem with response) (CCPPeer::sendReq)
  DATE TIME  14f4 ---ERROR--- Failed to send request (or problem with response) (CCPPeer::sendRaw)
  DATE TIME  14f4 ---ERROR--- Failed to send Sync message (or problem with response) (CDAProtocol::sendSynchronization)
  DATE TIME  14f4 ZDxCall{"Detailed":"", "ID":"DA", "Status":2} (CheckPoint::Common::CZDxWrapper::sendRequest)
  ```

* In $UEPMDIR/logs/server_messages.log file on the Endpoint Server, the following error can be found:  

  ```
  
  [DATE TIME] ERROR Dispatcher-Thread-10 - A server exception occurred while handling an endpoint request. Request size: 1611, scheme: http, port: 80, uri:
   /cp/connectionPoint/syncreq, ip: /X.X.X.X:51883, opType: SYNC_REQUEST, useZpdoc: true (ConnectionPointServlet)
  com.checkpoint.uepm.connectionpoint.ConnectionPointException: TICKET_NUMBER = XXXXXXXXX. com.checkpoint.uepm.UEPMException: com.checkpoint.uepm.UEPMException
  	at com.checkpoint.uepm.connectionpoint.ServletUtils.handleException(ServletUtils.java:92)
  	at com.checkpoint.uepm.connectionpoint.ConnectionPointServlet.doPost(ConnectionPointServlet.java:293)
  	at javax.servlet.http.HttpServlet.service(HttpServlet.java:637)
  	at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
  ...
  Caused by: com.checkpoint.uepm.UEPMException: com.checkpoint.uepm.UEPMException
  	at com.checkpoint.uepm.policyassignmentssm.calculator.impl.
  RuleBaseCalculatorAdapterImpl.calculateAssignedPolicies
  (RuleBaseCalculatorAdapterImpl.java:135)
  	at com.checkpoint.uepm.policyassignmentssm.message.SynchronizeHandler.generateSynchronizeResponse(SynchronizeHandler.java:103) 
  	at com.checkpoint.uepm.policyassignmentssm.PolicyAssignmentUSM.handleSynchronize(PolicyAssignmentUSM.java:103)
  	at com.checkpoint.uepm.connectionpoint.handler.SyncRequestHandler.handleRequest(SyncRequestHandler.java:90)
  	at com.checkpoint.uepm.connectionpoint.Dispatcher.dispatch(Dispatcher.java:222)
  	at com.checkpoint.uepm.connectionpoint.ConnectionPointServlet.doPost(ConnectionPointServlet.java:270)
  	... 17 more
  Caused by: java.lang.NullPointerException
  	at com.checkpoint.uepm.policyassignmentssm.calculator.impl.RuleBaseCalculatorAdapterImpl.calcAssignedUsersOneCheckPolicies(RuleBaseCalculatorAdapterImpl.java:549)
  	at com.checkpoint.uepm.policyassignmentssm.calculator.impl.RuleBaseCalculatorAdapterImpl.cal
  ```

* The issue can exist in an environment where Full Disk Encryption Blade is used.

## Solution

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---

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