diff --git a/ClientServerLib/ClientServerLib/CWebservice.cs b/ClientServerLib/ClientServerLib/CWebservice.cs
index 272fc025..34f493da 100644
--- a/ClientServerLib/ClientServerLib/CWebservice.cs
+++ b/ClientServerLib/ClientServerLib/CWebservice.cs
@@ -17,7 +17,7 @@ namespace ServerLib
         [WebInvoke(Method = "GET",
             ResponseFormat = WebMessageFormat.Json,
             UriTemplate = "/sendKeyEvent?key={key}")]
-        bool sendKeyEvent(string key);
+        void sendKeyEvent(string key);
 
         #region profile
 
@@ -31,7 +31,7 @@ namespace ServerLib
         [WebInvoke(Method = "POST",
             ResponseFormat = WebMessageFormat.Json,
             UriTemplate = "/sendProfile")]
-        bool sendProfile(ProfileData profile);
+        void sendProfile(ProfileData profile);
 
         [OperationContract]
         [WebInvoke(Method = "GET",
@@ -54,7 +54,7 @@ namespace ServerLib
             RequestFormat = WebMessageFormat.Json,
             ResponseFormat = WebMessageFormat.Json,
             UriTemplate = "/sendPhoto")]
-        bool sendPhoto(PhotoData photo);
+        void sendPhoto(PhotoData photo);
 
         #endregion
 
@@ -168,21 +168,30 @@ namespace ServerLib
             return sessionKey;
         }
 
-        public bool sendKeyEvent(string key)
+        public void sendKeyEvent(string key)
         {
             Guid sessionKey = getSession();
 
-            if (sessionKey == Guid.Empty || !SessionControl.requestRight(sessionKey, UserRights.UseKeyboard))
+            if (sessionKey == Guid.Empty )
             {
                 WebOperationContext.Current.OutgoingResponse.StatusCode = System.Net.HttpStatusCode.Forbidden;
-                return false;
-            }
+                WebOperationContext.Current.OutgoingResponse.StatusDescription = "No session";
 
-            if (CServer.SendKeyEvent == null)
-            {
-                return false;
             }
-            return CServer.SendKeyEvent(key);
+            else if (!SessionControl.requestRight(sessionKey, UserRights.UseKeyboard))
+            {
+                WebOperationContext.Current.OutgoingResponse.StatusCode = System.Net.HttpStatusCode.Forbidden;
+                WebOperationContext.Current.OutgoingResponse.StatusDescription = "Not allowed";
+            }
+            else if (CServer.SendKeyEvent == null)
+            {
+                WebOperationContext.Current.OutgoingResponse.StatusCode = System.Net.HttpStatusCode.NotFound;
+                WebOperationContext.Current.OutgoingResponse.StatusDescription = "Not found";
+            }
+            else
+            {
+                CServer.SendKeyEvent(key);
+            }
         }
 
         #region profile
@@ -193,35 +202,51 @@ namespace ServerLib
             if (sessionKey == Guid.Empty)
             {
                 WebOperationContext.Current.OutgoingResponse.StatusCode = System.Net.HttpStatusCode.Forbidden;
+                WebOperationContext.Current.OutgoingResponse.StatusDescription = "No session";
                 return -1;
             }
-
-            return SessionControl.getUserIdFromSession(sessionKey);
+            int profileId = SessionControl.getUserIdFromSession(sessionKey);
+            if (profileId < 0)
+            {
+                WebOperationContext.Current.OutgoingResponse.StatusCode = System.Net.HttpStatusCode.Forbidden;
+                WebOperationContext.Current.OutgoingResponse.StatusDescription = "No session";
+                return -1;
+            }
+            return profileId;
         }
 
-        public bool sendProfile(ProfileData profile)
+        public void sendProfile(ProfileData profile)
         {
             Guid sessionKey = getSession();
 
             if (profile.ProfileId != -1) //-1 is the id for a new profile
             {
-                if (sessionKey == Guid.Empty || (!SessionControl.requestRight(sessionKey, UserRights.EditAllProfiles) &&
-                    SessionControl.getUserIdFromSession(sessionKey) != profile.ProfileId))
+                if (sessionKey == Guid.Empty)
                 {
                     WebOperationContext.Current.OutgoingResponse.StatusCode = System.Net.HttpStatusCode.Forbidden;
-                    return false;
+                    WebOperationContext.Current.OutgoingResponse.StatusDescription = "No session";
+                    return;
+                }
+
+                if (!SessionControl.requestRight(sessionKey, UserRights.EditAllProfiles) &&
+                    SessionControl.getUserIdFromSession(sessionKey) != profile.ProfileId)
+                {
+                    WebOperationContext.Current.OutgoingResponse.StatusCode = System.Net.HttpStatusCode.Forbidden;
+                    WebOperationContext.Current.OutgoingResponse.StatusDescription = "Not allowed";
+                    return;
                 }
             }
 
             if (CServer.SendProfileData == null)
             {
                 WebOperationContext.Current.OutgoingResponse.StatusCode = System.Net.HttpStatusCode.NotFound;
-                return false;
+                WebOperationContext.Current.OutgoingResponse.StatusDescription = "Not found";
+                return;
             }
 
-            bool result = CServer.SendProfileData(profile);
+            CServer.SendProfileData(profile);
 
-            if (profile.Password != null && profile.Password != "")
+            if (!string.IsNullOrEmpty(profile.Password))
             {
                 int profileId = profile.ProfileId;
                 if (profileId == -1)
@@ -231,18 +256,24 @@ namespace ServerLib
 
                 CServer.SetPassword(profileId, profile.Password);
             }
-
-            return result;
         }
 
         public ProfileData getProfile(int profileId)
         {
             Guid sessionKey = getSession();
 
-            if (sessionKey == Guid.Empty || (!SessionControl.requestRight(sessionKey, UserRights.ViewOtherProfiles) &&
-                SessionControl.getUserIdFromSession(sessionKey) != profileId))
+            if (sessionKey == Guid.Empty)
             {
                 WebOperationContext.Current.OutgoingResponse.StatusCode = System.Net.HttpStatusCode.Forbidden;
+                WebOperationContext.Current.OutgoingResponse.StatusDescription = "No session";
+                return new ProfileData();
+            }
+
+            if (!SessionControl.requestRight(sessionKey, UserRights.ViewOtherProfiles) &&
+                SessionControl.getUserIdFromSession(sessionKey) != profileId)
+            {
+                WebOperationContext.Current.OutgoingResponse.StatusCode = System.Net.HttpStatusCode.Forbidden;
+                WebOperationContext.Current.OutgoingResponse.StatusDescription = "Not allowed";
                 return new ProfileData();
             }
 
@@ -270,16 +301,24 @@ namespace ServerLib
 
         #region photo
 
-        public bool sendPhoto(PhotoData photo)
+        public void sendPhoto(PhotoData photo)
         {
             Guid sessionKey = getSession();
+            if (sessionKey == Guid.Empty)
+            {
+                WebOperationContext.Current.OutgoingResponse.StatusCode = System.Net.HttpStatusCode.Forbidden;
+                WebOperationContext.Current.OutgoingResponse.StatusDescription = "No session";
+                return;
+            }
+
             if (!SessionControl.requestRight(sessionKey, UserRights.UploadPhotos))
             {
                 WebOperationContext.Current.OutgoingResponse.StatusCode = System.Net.HttpStatusCode.Forbidden;
-                return false;
+                WebOperationContext.Current.OutgoingResponse.StatusDescription = "Not allowed";
+                return;
             }
 
-            return CServer.SendPhoto(photo);
+            CServer.SendPhoto(photo);
         }
 
         #endregion
@@ -292,6 +331,7 @@ namespace ServerLib
             if (sessionId == Guid.Empty)
             {
                 WebOperationContext.Current.OutgoingResponse.StatusCode = System.Net.HttpStatusCode.Forbidden;
+                WebOperationContext.Current.OutgoingResponse.StatusDescription = "Wrong username or password";
             }
             return sessionId;
         }
@@ -424,9 +464,16 @@ namespace ServerLib
         public void setUserRole(int profileId, int userRole)
         {
             Guid sessionKey = getSession();
+            if (sessionKey == Guid.Empty)
+            {
+                WebOperationContext.Current.OutgoingResponse.StatusCode = System.Net.HttpStatusCode.Forbidden;
+                WebOperationContext.Current.OutgoingResponse.StatusDescription = "No session";
+                return;
+            }
             if (!SessionControl.requestRight(sessionKey, UserRights.EditAllProfiles))
             {
                 WebOperationContext.Current.OutgoingResponse.StatusCode = System.Net.HttpStatusCode.Forbidden;
+                WebOperationContext.Current.OutgoingResponse.StatusDescription = "Not allowed";
                 return;
             }
             CServer.SetUserRole(profileId, userRole);
diff --git a/ClientServerLib/ClientServerLib/SessionControl.cs b/ClientServerLib/ClientServerLib/SessionControl.cs
index ae9edf8e..c042803f 100644
--- a/ClientServerLib/ClientServerLib/SessionControl.cs
+++ b/ClientServerLib/ClientServerLib/SessionControl.cs
@@ -59,6 +59,10 @@ namespace ServerLib
 
         internal static int getUserIdFromSession(Guid sessionId)
         {
+            if (!activeSessions.ContainsKey(sessionId))
+            {
+                return -1;
+            }
             return activeSessions[sessionId].ProfileId;
         }
     }
diff --git a/Vocaluxe/Vocaluxe.csproj b/Vocaluxe/Vocaluxe.csproj
index 0ce49fa2..6ac3e6c1 100644
--- a/Vocaluxe/Vocaluxe.csproj
+++ b/Vocaluxe/Vocaluxe.csproj
@@ -312,6 +312,9 @@
       <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
       <CustomToolNamespace>images</CustomToolNamespace>
     </Content>
+    <Content Include="Website\css\images\alert.png">
+      <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
+    </Content>
     <Content Include="Website\css\images\icons-18-black.png">
       <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
       <CustomToolNamespace>images</CustomToolNamespace>
diff --git a/Vocaluxe/Website/css/images/alert.png b/Vocaluxe/Website/css/images/alert.png
new file mode 100644
index 00000000..dd0e2afc
Binary files /dev/null and b/Vocaluxe/Website/css/images/alert.png differ
diff --git a/Vocaluxe/Website/css/style.css b/Vocaluxe/Website/css/style.css
index 7554a30d..f568b912 100644
--- a/Vocaluxe/Website/css/style.css
+++ b/Vocaluxe/Website/css/style.css
@@ -73,3 +73,10 @@
 .ui-input-search {
     background: #ffffff !important;
 }
+
+.ui-custom-errorIcon {
+    background: url(images/alert.png) !important;
+    background-size: 42px 42px;
+    -webkit-border-radius: 0px !important;
+    border-radius: 0px !important;
+}
diff --git a/Vocaluxe/Website/js/main.js b/Vocaluxe/Website/js/main.js
index 1714fc17..a43136bf 100644
--- a/Vocaluxe/Website/js/main.js
+++ b/Vocaluxe/Website/js/main.js
@@ -598,7 +598,17 @@ function request(data, message) {
             $('div[data-role="content"]').unwrap();
         }
     }).fail(function (result) {
-        //TODO:Fail Handling
+        if (result.statusText.indexOf("No session") != -1) {
+            logout();
+            return;
+        }
+        if (message != "noOverlay") {
+            var msg = result.statusText.length <= 20 ? result.statusText : "Error...";
+            if (msg == "error" && result.readyState == 0) {
+                msg = "No connection";
+            }
+            showError(msg);
+        }
     });
 }
 
@@ -606,4 +616,17 @@ function showError(message) {
     if (!message) {
         message = "Error...";
     }
+    
+    $('div[data-role="content"]').wrap('<div class="overlay" />');
+    $.mobile.loading('show', {
+        text: message,
+        textVisible: true
+    });
+    $('.ui-loader').find('span').removeClass('ui-icon-loading').addClass('ui-custom-errorIcon');
+
+    setTimeout(function() {
+        $.mobile.loading('hide');
+        $('div[data-role="content"]').unwrap();
+        $('.ui-loader').find('span').removeClass('ui-custom-errorIcon').addClass('ui-icon-loading');
+    }, 1000);
 }
\ No newline at end of file