Index: lams_tool_assessment/src/java/org/lamsfoundation/lams/tool/assessment/service/AssessmentServiceImpl.java
===================================================================
diff -u -r1e7597ac1a3c3206dd501bfd994a7ca737281ed2 -r69b35bee45fa0a1aa322c3a0eac35b035862184a
--- lams_tool_assessment/src/java/org/lamsfoundation/lams/tool/assessment/service/AssessmentServiceImpl.java	(.../AssessmentServiceImpl.java)	(revision 1e7597ac1a3c3206dd501bfd994a7ca737281ed2)
+++ lams_tool_assessment/src/java/org/lamsfoundation/lams/tool/assessment/service/AssessmentServiceImpl.java	(.../AssessmentServiceImpl.java)	(revision 69b35bee45fa0a1aa322c3a0eac35b035862184a)
@@ -412,7 +412,7 @@
     }
 
     @Override
-    public void storeUserAnswers(Long assessmentUid, Long userId,
+    public boolean storeUserAnswers(Long assessmentUid, Long userId,
 	    ArrayList<LinkedHashSet<AssessmentQuestion>> pagedQuestions, boolean isAutosave) {
 	
 	int maximumGrade = 0;
@@ -421,6 +421,11 @@
 	AssessmentResult result = assessmentResultDao.getLastAssessmentResult(assessmentUid, userId);
 	Assessment assessment = result.getAssessment();
 	
+	//prohibit users from submitting (or autosubmitting) answers after result is finished but Resubmit button is not pressed (e.g. using 2 browsers) 
+	if (result.getFinishDate() != null) {
+	    return false;
+	}
+	
 	//store all answers (in all pages)
 	for (LinkedHashSet<AssessmentQuestion> questionsForOnePage : pagedQuestions) {
 	    for (AssessmentQuestion question : questionsForOnePage) {
@@ -466,6 +471,8 @@
 	    result.setFinishDate(new Timestamp(new Date().getTime()));
 	    assessmentResultDao.saveObject(result);
 	}
+	
+	return true;
     }
 
     /**
Index: lams_tool_assessment/src/java/org/lamsfoundation/lams/tool/assessment/service/IAssessmentService.java
===================================================================
diff -u -rc500d9384f365fe8b4c2997a799c44f92e8c26e9 -r69b35bee45fa0a1aa322c3a0eac35b035862184a
--- lams_tool_assessment/src/java/org/lamsfoundation/lams/tool/assessment/service/IAssessmentService.java	(.../IAssessmentService.java)	(revision c500d9384f365fe8b4c2997a799c44f92e8c26e9)
+++ lams_tool_assessment/src/java/org/lamsfoundation/lams/tool/assessment/service/IAssessmentService.java	(.../IAssessmentService.java)	(revision 69b35bee45fa0a1aa322c3a0eac35b035862184a)
@@ -197,8 +197,10 @@
      * @param userId
      * @param pagedQuestions
      * @param isAutosave indicates whether it's autosave request
+     * 
+     * @return whether storing results is allowed, false otherwise
      */
-    void storeUserAnswers(Long assessmentUid, Long userId, ArrayList<LinkedHashSet<AssessmentQuestion>> pagedQuestions,
+    boolean storeUserAnswers(Long assessmentUid, Long userId, ArrayList<LinkedHashSet<AssessmentQuestion>> pagedQuestions,
 	    boolean isAutosave);
     
     /**
Index: lams_tool_assessment/src/java/org/lamsfoundation/lams/tool/assessment/web/action/LearningAction.java
===================================================================
diff -u -r0044bcbed6edfa5fdae859e7b14922eb77b9faab -r69b35bee45fa0a1aa322c3a0eac35b035862184a
--- lams_tool_assessment/src/java/org/lamsfoundation/lams/tool/assessment/web/action/LearningAction.java	(.../LearningAction.java)	(revision 0044bcbed6edfa5fdae859e7b14922eb77b9faab)
+++ lams_tool_assessment/src/java/org/lamsfoundation/lams/tool/assessment/web/action/LearningAction.java	(.../LearningAction.java)	(revision 69b35bee45fa0a1aa322c3a0eac35b035862184a)
@@ -448,7 +448,12 @@
 	}
 	
 	//store results from sessionMap into DB
-	storeUserAnswersIntoDatabase(sessionMap, false);
+ 	boolean isResultsStored = storeUserAnswersIntoDatabase(sessionMap, false);
+	// result was not stored in case user was prohibited from submitting (or autosubmitting) answers (e.g. when
+	// using 2 browsers). Then show last stored results
+ 	if (!isResultsStored) {
+ 	    loadupLastAttempt(sessionMap);
+ 	}
 	
 	// populate info for displaying results page
 	prepareResultsPageData(sessionMap);
@@ -923,25 +928,27 @@
     /**
      * Store user answers in DB in last unfinished attempt and notify teachers about it.
      */
-    private void storeUserAnswersIntoDatabase(SessionMap<String, Object> sessionMap, boolean isAutosave) {
+    private boolean storeUserAnswersIntoDatabase(SessionMap<String, Object> sessionMap, boolean isAutosave) {
 	
 	ArrayList<LinkedHashSet<AssessmentQuestion>> pagedQuestions = (ArrayList<LinkedHashSet<AssessmentQuestion>>) sessionMap
 		.get(AssessmentConstants.ATTR_PAGED_QUESTIONS);
 	Long assessmentUid = ((Assessment) sessionMap.get(AssessmentConstants.ATTR_ASSESSMENT)).getUid();
 	Long userId = ((AssessmentUser) sessionMap.get(AssessmentConstants.ATTR_USER)).getUserId();
 	IAssessmentService service = getAssessmentService();
-	service.storeUserAnswers(assessmentUid, userId, pagedQuestions, isAutosave);
+	boolean isResultsStored = service.storeUserAnswers(assessmentUid, userId, pagedQuestions, isAutosave);
 	
 	// notify teachers
 	ToolAccessMode mode = (ToolAccessMode) sessionMap.get(AttributeNames.ATTR_MODE);
 	Assessment assessment = (Assessment) sessionMap.get(AssessmentConstants.ATTR_ASSESSMENT);
-	if ((mode != null) && !mode.isTeacher() && !isAutosave && assessment.isNotifyTeachersOnAttemptCompletion()) {
+	if ((mode != null) && !mode.isTeacher() && !isAutosave && isResultsStored && assessment.isNotifyTeachersOnAttemptCompletion()) {
 
 	    Long toolSessionId = (Long) sessionMap.get(AttributeNames.PARAM_TOOL_SESSION_ID);
 	    AssessmentUser assessmentUser = getCurrentUser(toolSessionId);
 	    String fullName = assessmentUser.getLastName() + " " + assessmentUser.getFirstName();
 	    service.notifyTeachersOnAttemptCompletion(toolSessionId, fullName);
 	}
+	
+	return isResultsStored;
     }
     
     private IAssessmentService getAssessmentService() {