diff --git a/src/Volo.Abp.AspNetCore.Mvc.UI/wwwroot/libs/abp/abp-jquery.js b/src/Volo.Abp.AspNetCore.Mvc.UI/wwwroot/libs/abp/abp-jquery.js
index c70a78d457..8b7d0d1ec9 100644
--- a/src/Volo.Abp.AspNetCore.Mvc.UI/wwwroot/libs/abp/abp-jquery.js
+++ b/src/Volo.Abp.AspNetCore.Mvc.UI/wwwroot/libs/abp/abp-jquery.js
@@ -24,7 +24,7 @@
                     userOptions.success && userOptions.success(data);
                 }).fail(function (jqXHR) {
                     if (jqXHR.getResponseHeader('_AbpErrorFormat') === 'true') {
-                        abp.ajax.handleAbpErrorResponse(jqXHR.responseJSON, userOptions, $dfd, jqXHR);
+                        abp.ajax.handleAbpErrorResponse(jqXHR, userOptions, $dfd);
                     } else {
                         abp.ajax.handleNonAbpErrorResponse(jqXHR, userOptions, $dfd);
                     }
@@ -82,46 +82,46 @@
             }
         },
 
+        handleErrorStatusCode: function (status) {
+            switch (status) {
+                case 401:
+                    abp.ajax.handleUnAuthorizedRequest(
+                        abp.ajax.showError(abp.ajax.defaultError401),
+                        abp.appPath
+                    );
+                    break;
+                case 403:
+                    abp.ajax.showError(abp.ajax.defaultError403);
+                    break;
+                case 404:
+                    abp.ajax.showError(abp.ajax.defaultError404);
+                    break;
+                default:
+                    abp.ajax.showError(abp.ajax.defaultError);
+                    break;
+            }
+        },
+
         handleNonAbpErrorResponse: function (jqXHR, userOptions, $dfd) {
             if (userOptions.abpHandleError !== false) {
-                switch (jqXHR.status) {
-                    case 401:
-                        abp.ajax.handleUnAuthorizedRequest(
-                            abp.ajax.showError(abp.ajax.defaultError401),
-                            abp.appPath
-                        );
-                        break;
-                    case 403:
-                        abp.ajax.showError(abp.ajax.defaultError403);
-                        break;
-                    case 404:
-                        abp.ajax.showError(abp.ajax.defaultError404);
-                        break;
-                    default:
-                        abp.ajax.showError(abp.ajax.defaultError);
-                        break;
-                }
+                abp.ajax.handleErrorStatusCode(jqXHR.status);
             }
 
             $dfd.reject.apply(this, arguments);
             userOptions.error && userOptions.error.apply(this, arguments);
         },
 
-        handleAbpErrorResponse: function (data, userOptions, $dfd, jqXHR) {
+        handleAbpErrorResponse: function (jqXHR, userOptions, $dfd) {
             var messagePromise = null;
 
-            if (data.error) {
-                if (userOptions.abpHandleError !== false) {
-                    messagePromise = abp.ajax.showError(data.error);
-                }
-            } else {
-                data.error = abp.ajax.defaultError;
+            if (userOptions.abpHandleError !== false) {
+                messagePromise = abp.ajax.showError(jqXHR.responseJSON.error);
             }
 
-            abp.ajax.logError(data.error);
+            abp.ajax.logError(jqXHR.responseJSON.error);
 
-            $dfd && $dfd.reject(data.error, jqXHR);
-            userOptions.error && userOptions.error(data.error, jqXHR);
+            $dfd && $dfd.reject(jqXHR.responseJSON.error, jqXHR);
+            userOptions.error && userOptions.error(jqXHR.responseJSON.error, jqXHR);
 
             if (jqXHR.status === 401 && userOptions.abpHandleError !== false) {
                 abp.ajax.handleUnAuthorizedRequest(messagePromise);
diff --git a/src/Volo.Abp.AspNetCore.Mvc/Volo/Abp/AspNetCore/Mvc/ExceptionHandling/AbpExceptionFilter.cs b/src/Volo.Abp.AspNetCore.Mvc/Volo/Abp/AspNetCore/Mvc/ExceptionHandling/AbpExceptionFilter.cs
index df1e1c7aea..f9fcd1d721 100644
--- a/src/Volo.Abp.AspNetCore.Mvc/Volo/Abp/AspNetCore/Mvc/ExceptionHandling/AbpExceptionFilter.cs
+++ b/src/Volo.Abp.AspNetCore.Mvc/Volo/Abp/AspNetCore/Mvc/ExceptionHandling/AbpExceptionFilter.cs
@@ -14,8 +14,6 @@ namespace Volo.Abp.AspNetCore.Mvc.ExceptionHandling
     {
         public ILogger<AbpExceptionFilter> Logger { get; set; }
 
-        //TODO: Use EventBus to trigger error handled event like in previous ABP
-
         private readonly IExceptionToErrorInfoConverter _errorInfoConverter;
         private readonly HttpExceptionStatusCodeFinder _statusCodeFinder;
 
@@ -29,24 +27,37 @@ namespace Volo.Abp.AspNetCore.Mvc.ExceptionHandling
 
         public void OnException(ExceptionContext context)
         {
-            if (!context.ActionDescriptor.IsControllerAction())
+            if (!ShouldHandleException(context))
             {
                 return;
             }
 
-            //TODO: Create DontWrap attribute to control wrapping..?
-
             Logger.LogException(context.Exception);
+
             HandleAndWrapException(context);
         }
 
-        private void HandleAndWrapException(ExceptionContext context)
+        private bool ShouldHandleException(ExceptionContext context)
         {
-            if (!context.ActionDescriptor.IsControllerAction() || !ActionResultHelper.IsObjectResult(context.ActionDescriptor.GetMethodInfo().ReturnType))
+            if (context.ActionDescriptor.IsControllerAction() &&
+                ActionResultHelper.IsObjectResult(context.ActionDescriptor.GetMethodInfo().ReturnType))
             {
-                return;
+                //TODO: Create DontWrap attribute to control wrapping..?
+
+                return true;
             }
 
+            var accept = context.HttpContext.Request.Headers["Accept"];
+            if (accept.ToString().Contains("application/json")) //TODO: Optimize
+            {
+                return true;
+            }
+
+            return false;
+        }
+
+        private void HandleAndWrapException(ExceptionContext context)
+        {
             context.HttpContext.Response.StatusCode = _statusCodeFinder.GetStatusCode(context.HttpContext, context.Exception);
             context.HttpContext.Response.Headers.Add(new KeyValuePair<string, StringValues>("_AbpErrorFormat", "true"));
 
@@ -56,7 +67,7 @@ namespace Volo.Abp.AspNetCore.Mvc.ExceptionHandling
                 )
             );
 
-            //EventBus.Trigger(this, new AbpHandledExceptionData(context.Exception));
+            //TODO: Trigger an AbpExceptionHandled event or something like that.
 
             context.Exception = null; //Handled!
         }
diff --git a/src/Volo.Abp.Identity.Web/Pages/Identity/Users/CreateModal.cshtml b/src/Volo.Abp.Identity.Web/Pages/Identity/Users/CreateModal.cshtml
index bf7433df46..2bb93d4199 100644
--- a/src/Volo.Abp.Identity.Web/Pages/Identity/Users/CreateModal.cshtml
+++ b/src/Volo.Abp.Identity.Web/Pages/Identity/Users/CreateModal.cshtml
@@ -17,7 +17,7 @@
             
             <ul class="nav nav-tabs" role="tablist">
                 <li class="nav-item">
-                    <a class="nav-link active" data-toggle="tab" href="#CreateUser_UserInfo" role="tab">@Localizer["CreateUser"]</a>
+                    <a class="nav-link active" data-toggle="tab" href="#CreateUser_UserInfo" role="tab">@Localizer["UserInformations"]</a>
                 </li>
                 <li class="nav-item">
                     <a class="nav-link" data-toggle="tab" href="#CreateUser_RolesTab" role="tab">@Localizer["Roles"]</a>
diff --git a/src/Volo.Abp.Identity.Web/wwwroot/modules/identity/helpers/ModalManager.js b/src/Volo.Abp.Identity.Web/wwwroot/modules/identity/helpers/ModalManager.js
index 2000570645..19f832d284 100644
--- a/src/Volo.Abp.Identity.Web/wwwroot/modules/identity/helpers/ModalManager.js
+++ b/src/Volo.Abp.Identity.Web/wwwroot/modules/identity/helpers/ModalManager.js
@@ -68,6 +68,7 @@ var abp = abp || {};
                 if (_$form.length) {
                     if (_$form.attr('data-ajaxForm') !== 'false') {
                         _$form.ajaxForm({
+                            dataType: 'json',
                             beforeSubmit: function() {
                                 _setBusy(true);
                             },
@@ -75,8 +76,17 @@ var abp = abp || {};
                                 _publicApi.setResult.apply(_publicApi, arguments);
                                 _$modal.modal('hide');
                             },
-                            error: function() {
-                                //TODO: Handle error!
+                            error: function (jqXHR) {
+                                //TODO: Better and central error handling!
+                                if (jqXHR.getResponseHeader('_AbpErrorFormat') === 'true') {
+                                    abp.ajax.logError(jqXHR.responseJSON.error);
+                                    var messagePromise = abp.ajax.showError(jqXHR.responseJSON.error);
+                                    if (jqXHR.status === 401) {
+                                        abp.ajax.handleUnAuthorizedRequest(messagePromise);
+                                    }
+                                } else {
+                                    abp.ajax.handleErrorStatusCode(jqXHR.status);
+                                }
                             },
                             complete: function() {
                                 _setBusy(false);