diff --git a/src/Umbraco.Web.UI.Client/src/common/services/formhelper.service.js b/src/Umbraco.Web.UI.Client/src/common/services/formhelper.service.js
index 5d5b509315..21c7742c61 100644
--- a/src/Umbraco.Web.UI.Client/src/common/services/formhelper.service.js
+++ b/src/Umbraco.Web.UI.Client/src/common/services/formhelper.service.js
@@ -150,9 +150,7 @@ function formHelper(angularHelper, serverValidationManager, $timeout, notificati
                     dialogService.ysodDialog(err);
                 }
             }
-            else {
-                dialogService.ysodDialog(err);
-            }
+            
         },
 
         /**
diff --git a/src/Umbraco.Web/Umbraco.Web.csproj b/src/Umbraco.Web/Umbraco.Web.csproj
index abe4bbc7cf..c86b86db30 100644
--- a/src/Umbraco.Web/Umbraco.Web.csproj
+++ b/src/Umbraco.Web/Umbraco.Web.csproj
@@ -782,6 +782,7 @@
     <Compile Include="WebApi\AngularJsonMediaTypeFormatter.cs" />
     <Compile Include="WebApi\AngularJsonOnlyConfigurationAttribute.cs" />
     <Compile Include="WebApi\Binders\MemberBinder.cs" />
+    <Compile Include="WebApi\EnableDetailedErrorsAttribute.cs" />
     <Compile Include="WebApi\Filters\AngularAntiForgeryHelper.cs" />
     <Compile Include="WebApi\Filters\AppendCurrentEventMessagesAttribute.cs" />
     <Compile Include="WebApi\Filters\AppendUserModifiedHeaderAttribute.cs" />
@@ -1225,6 +1226,8 @@
     <Compile Include="WebApi\UmbracoAuthorizedApiController.cs" />
     <Compile Include="WebApi\Filters\ValidationFilterAttribute.cs" />
     <Compile Include="WebApi\Filters\UmbracoUserTimeoutFilterAttribute.cs" />
+    <Compile Include="WebApi\UnhandedExceptionLoggerConfigurationAttribute.cs" />
+    <Compile Include="WebApi\UnhandledExceptionLogger.cs" />
     <Compile Include="WebApi\WebApiHelper.cs" />
     <Compile Include="WebBootManager.cs" />
     <Compile Include="Routing\LegacyRequestInitializer.cs" />
diff --git a/src/Umbraco.Web/WebApi/EnableDetailedErrorsAttribute.cs b/src/Umbraco.Web/WebApi/EnableDetailedErrorsAttribute.cs
new file mode 100644
index 0000000000..1d35d19134
--- /dev/null
+++ b/src/Umbraco.Web/WebApi/EnableDetailedErrorsAttribute.cs
@@ -0,0 +1,17 @@
+using System.Web.Http;
+using System.Web.Http.Controllers;
+using System.Web.Http.Filters;
+
+namespace Umbraco.Web.WebApi
+{
+    /// <summary>
+    /// Ensures controllers have detailed error messages even when debug mode is off
+    /// </summary>
+    public class EnableDetailedErrorsAttribute : ActionFilterAttribute
+    {
+        public override void OnActionExecuting(HttpActionContext actionContext)
+        {
+            actionContext.ControllerContext.Configuration.IncludeErrorDetailPolicy = IncludeErrorDetailPolicy.Always;
+        }
+    }
+}
\ No newline at end of file
diff --git a/src/Umbraco.Web/WebApi/UmbracoAuthorizedApiController.cs b/src/Umbraco.Web/WebApi/UmbracoAuthorizedApiController.cs
index 25f85def0f..73f6367741 100644
--- a/src/Umbraco.Web/WebApi/UmbracoAuthorizedApiController.cs
+++ b/src/Umbraco.Web/WebApi/UmbracoAuthorizedApiController.cs
@@ -22,7 +22,9 @@ namespace Umbraco.Web.WebApi
     [UmbracoAuthorize]
     [DisableBrowserCache]
     [UmbracoWebApiRequireHttps]
-    [CheckIfUserTicketDataIsStale]
+    [CheckIfUserTicketDataIsStale]
+    [UnhandedExceptionLoggerConfiguration]
+    [EnableDetailedErrors]
     public abstract class UmbracoAuthorizedApiController : UmbracoApiController
     {
         
diff --git a/src/Umbraco.Web/WebApi/UnhandedExceptionLoggerConfigurationAttribute.cs b/src/Umbraco.Web/WebApi/UnhandedExceptionLoggerConfigurationAttribute.cs
new file mode 100644
index 0000000000..51c43b0821
--- /dev/null
+++ b/src/Umbraco.Web/WebApi/UnhandedExceptionLoggerConfigurationAttribute.cs
@@ -0,0 +1,29 @@
+using System;
+using System.Net.Http;
+using System.Threading;
+using System.Threading.Tasks;
+using System.Web.Http.Controllers;
+using System.Web.Http.ExceptionHandling;
+using System.Web.Http.Filters;
+using Umbraco.Core;
+using Umbraco.Core.Logging;
+
+namespace Umbraco.Web.WebApi
+{
+    /// <summary>
+    /// Adds our unhandled exception logger to the controller's services
+    /// </summary>
+    /// <remarks>
+    /// Important to note that the <see cref="UnhandledExceptionLogger"/> will only be called if the controller has an ExceptionFilter applied
+    /// to it, so to kill two birds with one stone, this class inherits from ExceptionFilterAttribute purely to force webapi to use the 
+    /// IExceptionLogger (strange)
+    /// </remarks>
+    public class UnhandedExceptionLoggerConfigurationAttribute : ExceptionFilterAttribute, IControllerConfiguration
+    {
+        public virtual void Initialize(HttpControllerSettings controllerSettings, HttpControllerDescriptor controllerDescriptor)
+        {
+            controllerSettings.Services.Add(typeof(IExceptionLogger), new UnhandledExceptionLogger());
+        }
+        
+    }
+}
\ No newline at end of file
diff --git a/src/Umbraco.Web/WebApi/UnhandledExceptionLogger.cs b/src/Umbraco.Web/WebApi/UnhandledExceptionLogger.cs
new file mode 100644
index 0000000000..7c6d9df294
--- /dev/null
+++ b/src/Umbraco.Web/WebApi/UnhandledExceptionLogger.cs
@@ -0,0 +1,36 @@
+using System.Web.Http.ExceptionHandling;
+using Umbraco.Core;
+using Umbraco.Core.Logging;
+
+namespace Umbraco.Web.WebApi
+{
+    /// <summary>
+    /// Used to log unhandled exceptions in webapi controllers
+    /// </summary>
+    public class UnhandledExceptionLogger : ExceptionLogger
+    {
+        private readonly ILogger _logger;
+
+        public UnhandledExceptionLogger()
+            : this(ApplicationContext.Current.ProfilingLogger.Logger)
+        {
+        }
+
+        public UnhandledExceptionLogger(ILogger logger)
+        {
+            _logger = logger;
+        }
+
+        public override void Log(ExceptionLoggerContext context)
+        {
+            if (context != null && context.ExceptionContext != null
+                && context.ExceptionContext.ActionContext != null && context.ExceptionContext.ActionContext.ControllerContext != null
+                && context.ExceptionContext.ActionContext.ControllerContext.Controller != null
+                && context.Exception != null)
+            {
+                _logger.Error(context.ExceptionContext.ActionContext.ControllerContext.Controller.GetType(), "Unhandled controller exception occurred", context.Exception);
+            }            
+        }
+        
+    }
+}
\ No newline at end of file