diff --git a/app/assets/javascripts/app/controllers/_application_controller/wizard_modal_full_screen.coffee b/app/assets/javascripts/app/controllers/_application_controller/wizard_modal_full_screen.coffee
index e06bf7b4e..613ee6429 100644
--- a/app/assets/javascripts/app/controllers/_application_controller/wizard_modal_full_screen.coffee
+++ b/app/assets/javascripts/app/controllers/_application_controller/wizard_modal_full_screen.coffee
@@ -5,6 +5,4 @@ class App.ControllerWizardFullScreen extends App.ControllerWizardModal
   # login check / get session user
   redirectToLogin: =>
     App.Auth.loginCheck()
-    @el.remove()
-    App.Plugin.init()
-    @navigate '#', { removeEl: true }
+    @navigate('#', { removeEl: true })
diff --git a/app/assets/javascripts/app/controllers/_dashboard/activity_stream.coffee b/app/assets/javascripts/app/controllers/_dashboard/activity_stream.coffee
index d0a521fc3..bbb0e363a 100644
--- a/app/assets/javascripts/app/controllers/_dashboard/activity_stream.coffee
+++ b/app/assets/javascripts/app/controllers/_dashboard/activity_stream.coffee
@@ -59,6 +59,8 @@ class App.DashboardActivityStream extends App.CollectionController
     @el.closest('.sidebar').find('.activity-description').addClass('hidden')
 
   onRenderItemEnd: (item, el) ->
+    return if App.Session.get() is undefined
+
     new App.WidgetAvatar(
       el:        el.find('.js-avatar')
       object_id: item.created_by_id
diff --git a/app/assets/javascripts/app/controllers/_plugin/default_locale.coffee b/app/assets/javascripts/app/controllers/_plugin/default_locale.coffee
index 98099c2ed..74e06f885 100644
--- a/app/assets/javascripts/app/controllers/_plugin/default_locale.coffee
+++ b/app/assets/javascripts/app/controllers/_plugin/default_locale.coffee
@@ -16,8 +16,7 @@ class DefaultLocale extends App.Controller
         processData: true
       )
 
-    @controllerBind('auth:login', (session) =>
+    if App.Session.get() isnt undefined
       @delay(check, 3500, 'default_locale')
-    )
 
 App.Config.set('default_locale', DefaultLocale, 'Plugins')
diff --git a/app/assets/javascripts/app/controllers/_plugin/default_timezone.coffee b/app/assets/javascripts/app/controllers/_plugin/default_timezone.coffee
index 0f25ad6d6..2b341a229 100644
--- a/app/assets/javascripts/app/controllers/_plugin/default_timezone.coffee
+++ b/app/assets/javascripts/app/controllers/_plugin/default_timezone.coffee
@@ -26,9 +26,8 @@ class DefaultTimezone extends App.Controller
       #  processData: true
       #)
 
-    @controllerBind('auth:login', (session) =>
+    if App.Session.get() isnt undefined
       @delay(check, 8500, 'default_timezone')
-    )
 
   updateSetting: (timezone) ->
     App.Setting.set('timezone_default', timezone)
diff --git a/app/assets/javascripts/app/controllers/_plugin/notify.coffee b/app/assets/javascripts/app/controllers/_plugin/notify.coffee
index b275f13e2..3637edd7f 100644
--- a/app/assets/javascripts/app/controllers/_plugin/notify.coffee
+++ b/app/assets/javascripts/app/controllers/_plugin/notify.coffee
@@ -51,11 +51,9 @@ class App.Notify extends App.Controller
     )
 
     # request desktop notification after login
-    @controllerBind('auth', (data) ->
-      if !_.isEmpty(data)
-        return if !window.Notification
-        window.Notification.requestPermission()
-    )
+    if App.Session.get() isnt undefined && window.Notification
+      window.Notification.requestPermission()
+
     $(window).focus(
       =>
         for counter, notification of @desktopNotify
diff --git a/app/assets/javascripts/app/controllers/_plugin/session_timeout.coffee b/app/assets/javascripts/app/controllers/_plugin/session_timeout.coffee
index adce4081e..56529eafe 100644
--- a/app/assets/javascripts/app/controllers/_plugin/session_timeout.coffee
+++ b/app/assets/javascripts/app/controllers/_plugin/session_timeout.coffee
@@ -5,14 +5,16 @@ class SessionTimeout extends App.Controller
     super
 
     lastEvent = new Date().getTime()
-    check_timeout = =>
+    checkTimeout = =>
       return if new Date().getTime() - 1000 < lastEvent
       lastEvent = new Date().getTime()
       @checkLogout()
 
-    $(document).off('keyup.session_timeout').on('keyup.session_timeout', check_timeout)
-    $(document).off('mousemove.session_timeout').on('mousemove.session_timeout', check_timeout)
-    @controllerBind('config_update', check_timeout)
+    # reset timeout on mouse move
+    $(document).off('keyup.session_timeout').on('keyup.session_timeout', checkTimeout)
+    $(document).off('mousemove.session_timeout').on('mousemove.session_timeout', checkTimeout)
+
+    @controllerBind('config_update', checkTimeout)
     @controllerBind('session_timeout', @quitApp)
     @interval(@checkLogout, 5000, 'session_timeout')
 
diff --git a/app/assets/javascripts/app/controllers/_plugin/switch_back_to_user.coffee b/app/assets/javascripts/app/controllers/_plugin/switch_back_to_user.coffee
index e32fe07eb..455f325fa 100644
--- a/app/assets/javascripts/app/controllers/_plugin/switch_back_to_user.coffee
+++ b/app/assets/javascripts/app/controllers/_plugin/switch_back_to_user.coffee
@@ -14,12 +14,6 @@ class SwitchBackToUser extends App.Controller
       @render()
     )
 
-    # remove widget
-    @controllerBind('auth:logout', =>
-      App.Config.set('switch_back_to_possible', false)
-      @render()
-    )
-
   render: (user) ->
 
     # if no switch to user is active
diff --git a/app/assets/javascripts/app/controllers/_plugin/translation_support.coffee b/app/assets/javascripts/app/controllers/_plugin/translation_support.coffee
index 189a4e96f..793e593df 100644
--- a/app/assets/javascripts/app/controllers/_plugin/translation_support.coffee
+++ b/app/assets/javascripts/app/controllers/_plugin/translation_support.coffee
@@ -27,9 +27,8 @@ class TranslationSupport extends App.Controller
     @controllerBind('i18n:language:change', =>
       @delay(check, 2500, 'translation_support')
     )
-    @controllerBind('auth:login', =>
+    if App.Session.get() isnt undefined
       @delay(check, 2500, 'translation_support')
-    )
 
 App.Config.set( 'translaton_support', TranslationSupport, 'Plugins' )
 
diff --git a/app/assets/javascripts/app/controllers/_plugin/user_signup_check.coffee b/app/assets/javascripts/app/controllers/_plugin/user_signup_check.coffee
index 359840909..2dd98bd09 100644
--- a/app/assets/javascripts/app/controllers/_plugin/user_signup_check.coffee
+++ b/app/assets/javascripts/app/controllers/_plugin/user_signup_check.coffee
@@ -7,10 +7,6 @@ class UserSignupCheck extends App.Controller
       new Modal(user: user)
     )
 
-    @controllerBind('auth:login', (user) =>
-      return if !user
-      @verifyLater(user.id)
-    )
     user = App.User.current()
     @verifyLater(user.id) if user?
 
diff --git a/app/assets/javascripts/app/controllers/login.coffee b/app/assets/javascripts/app/controllers/login.coffee
index c7bb85806..bb921dfe4 100644
--- a/app/assets/javascripts/app/controllers/login.coffee
+++ b/app/assets/javascripts/app/controllers/login.coffee
@@ -76,7 +76,6 @@ class Login extends App.ControllerFullPage
     )
 
   success: (data, status, xhr) =>
-    App.Plugin.init()
 
     # redirect to #
     @log 'notice', 'REDIRECT to -#/-'
diff --git a/app/assets/javascripts/app/lib/app_post/auth.coffee b/app/assets/javascripts/app/lib/app_post/auth.coffee
index 8fd411422..426c3782e 100644
--- a/app/assets/javascripts/app/lib/app_post/auth.coffee
+++ b/app/assets/javascripts/app/lib/app_post/auth.coffee
@@ -159,7 +159,6 @@ class App.Auth
       if _.isFunction(model_object.clearInMemory)
         model_object.clearInMemory()
 
-    App.Plugin.init()
     App.Event.trigger('auth')
     App.Event.trigger('auth:logout')
 
diff --git a/app/assets/javascripts/app/models/_application_model.coffee b/app/assets/javascripts/app/models/_application_model.coffee
index 2b2136d25..a9370e0b1 100644
--- a/app/assets/javascripts/app/models/_application_model.coffee
+++ b/app/assets/javascripts/app/models/_application_model.coffee
@@ -850,6 +850,8 @@ set new attributes of model (remove already available attributes)
     collection
 
   activityMessage: (item) ->
+    return if !item
+
     return "Need own activityMessage() in model to generate text (#{@objectDisplayName()}/#{item.type})."
 
   @lastUpdatedAt: ->
diff --git a/app/assets/javascripts/app/models/data_privacy_task.coffee b/app/assets/javascripts/app/models/data_privacy_task.coffee
index 72e63cdc7..0c337ff15 100644
--- a/app/assets/javascripts/app/models/data_privacy_task.coffee
+++ b/app/assets/javascripts/app/models/data_privacy_task.coffee
@@ -21,6 +21,9 @@ Data Privacy tasks will be executed every 10 minutes. The execution might take s
 '''
 
   activityMessage: (item) ->
+    return if !item
+    return if !item.created_by
+
     if item.type is 'create'
       return App.i18n.translateContent('%s created data privacy task to delete user id |%s|', item.created_by.displayName(), item.objectNative.deletable_id)
     else if item.type is 'update'
diff --git a/app/assets/javascripts/app/models/organization.coffee b/app/assets/javascripts/app/models/organization.coffee
index 04b00abc6..969091f13 100644
--- a/app/assets/javascripts/app/models/organization.coffee
+++ b/app/assets/javascripts/app/models/organization.coffee
@@ -48,6 +48,9 @@ Using **Organisations** you can **group** customers. This has among others two i
     icon:       'organization'
 
   activityMessage: (item) ->
+    return if !item
+    return if !item.created_by
+
     if item.type is 'create'
       return App.i18n.translateContent('%s created Organization |%s|', item.created_by.displayName(), item.title)
     else if item.type is 'update'
diff --git a/app/assets/javascripts/app/models/role.coffee b/app/assets/javascripts/app/models/role.coffee
index 974ad85c3..ff6979c72 100644
--- a/app/assets/javascripts/app/models/role.coffee
+++ b/app/assets/javascripts/app/models/role.coffee
@@ -19,6 +19,9 @@ class App.Role extends App.Model
   ]
 
   activityMessage: (item) ->
+    return if !item
+    return if !item.created_by
+
     if item.type is 'create'
       return App.i18n.translateContent('%s created Role |%s|', item.created_by.displayName(), item.title)
     else if item.type is 'update'
diff --git a/app/assets/javascripts/app/models/ticket.coffee b/app/assets/javascripts/app/models/ticket.coffee
index fdcdb2e63..b70774167 100644
--- a/app/assets/javascripts/app/models/ticket.coffee
+++ b/app/assets/javascripts/app/models/ticket.coffee
@@ -98,6 +98,8 @@ class App.Ticket extends App.Model
 
   activityMessage: (item) ->
     return if !item
+    return if !item.created_by
+
     if item.type is 'create'
       return App.i18n.translateContent('%s created Ticket |%s|', item.created_by.displayName(), item.title)
     else if item.type is 'update'
diff --git a/app/assets/javascripts/app/models/ticket_article.coffee b/app/assets/javascripts/app/models/ticket_article.coffee
index 84e5d7f80..0ab042b2d 100644
--- a/app/assets/javascripts/app/models/ticket_article.coffee
+++ b/app/assets/javascripts/app/models/ticket_article.coffee
@@ -43,6 +43,8 @@ class App.TicketArticle extends App.Model
 
   activityMessage: (item) ->
     return if !item
+    return if !item.created_by
+
     if item.type is 'create'
       return App.i18n.translateContent('%s created Article for |%s|', item.created_by.displayName(), item.title)
     else if item.type is 'update'
diff --git a/app/assets/javascripts/app/models/user.coffee b/app/assets/javascripts/app/models/user.coffee
index c07c0f993..8ff31425c 100644
--- a/app/assets/javascripts/app/models/user.coffee
+++ b/app/assets/javascripts/app/models/user.coffee
@@ -163,6 +163,9 @@ class App.User extends App.Model
     icon:    'user'
 
   activityMessage: (item) ->
+    return if !item
+    return if !item.created_by
+
     if item.type is 'create'
       return App.i18n.translateContent('%s created User |%s|', item.created_by.displayName(), item.title)
     else if item.type is 'update'