Index: Application/Ringtoets/src/Application.Ringtoets/App.xaml.cs
===================================================================
diff -u -r03ef89eb3f342ecbecb600875fbc1081182ddbd1 -r45607cccad23ec38561120539e1109e69a9e82cb
--- Application/Ringtoets/src/Application.Ringtoets/App.xaml.cs	(.../App.xaml.cs)	(revision 03ef89eb3f342ecbecb600875fbc1081182ddbd1)
+++ Application/Ringtoets/src/Application.Ringtoets/App.xaml.cs	(.../App.xaml.cs)	(revision 45607cccad23ec38561120539e1109e69a9e82cb)
@@ -23,6 +23,7 @@
 using System.Collections.Generic;
 using System.Configuration;
 using System.Diagnostics;
+using System.DirectoryServices.AccountManagement;
 using System.Globalization;
 using System.IO;
 using System.Linq;
@@ -54,6 +55,7 @@
 using Ringtoets.StabilityPointStructures.Plugin;
 using Ringtoets.StabilityStoneCover.Plugin;
 using Ringtoets.WaveImpactAsphaltCover.Plugin;
+using CoreCommonGuiResources = Core.Common.Gui.Properties.Resources;
 using MessageBox = System.Windows.MessageBox;
 #if INCLUDE_DEMOPROJECT
 using Demo.Ringtoets.GUIs;
@@ -83,7 +85,11 @@
         {
             SetLanguage();
 
-            log.Info(string.Format(Core.Common.Gui.Properties.Resources.App_Starting_Ringtoets_version_0, SettingsHelper.ApplicationVersion));
+            var userDisplay = UserDisplay();
+
+            log.Info(string.Format(CoreCommonGuiResources.App_Starting_Ringtoets_version_0_by_user_0,
+                                   SettingsHelper.ApplicationVersion,
+                                   userDisplay));
         }
 
         private delegate void ExceptionDelegate(Exception exception, bool isTerminating);
@@ -219,7 +225,7 @@
                 {
                     if (!AcquireSingleInstancePerUserMutex())
                     {
-                        MessageBox.Show(Core.Common.Gui.Properties.Resources.App_ShutdownIfNotFirstInstance_Cannot_start_multiple_instances_of_Ringtoets_Please_close_the_other_instance_first);
+                        MessageBox.Show(CoreCommonGuiResources.App_ShutdownIfNotFirstInstance_Cannot_start_multiple_instances_of_Ringtoets_Please_close_the_other_instance_first);
                         Shutdown(1);
                         return true; //done here
                     }
@@ -283,7 +289,7 @@
 
         private static void AppDomain_UnhandledException(object sender, UnhandledExceptionEventArgs e)
         {
-            Exception exception = e.ExceptionObject as Exception ?? new Exception(Core.Common.Gui.Properties.Resources.App_AppDomain_UnhandledException_Unknown_exception_);
+            Exception exception = e.ExceptionObject as Exception ?? new Exception(CoreCommonGuiResources.App_AppDomain_UnhandledException_Unknown_exception_);
 
             HandleExceptionOnMainThread(exception, e.IsTerminating);
         }
@@ -391,6 +397,11 @@
             }
         }
 
+        private static string UserDisplay()
+        {
+            return string.Format("{0} ({1})", UserPrincipal.Current.DisplayName, UserPrincipal.Current.SamAccountName);
+        }
+
         private static string GetLogFileDirectory()
         {
             var fileAppender = LogManager.GetAllRepositories()