diff --git a/Jenkinsfile b/Jenkinsfile
index df141cd..868ed75 100644
--- a/Jenkinsfile
+++ b/Jenkinsfile
@@ -17,7 +17,7 @@ pipeline {
 
       /* calcolo numero versione... diverso x branch MASTER/DEVELOP */
       script {
-        withEnv(['NEXT_BUILD_NUMBER=232']) {
+        withEnv(['NEXT_BUILD_NUMBER=233']) {
           // env.versionNumber = VersionNumber(versionNumberString : '0.9.${BUILD_DATE_FORMATTED, "yyMM"}.${BUILDS_ALL_TIME}', projectStartDate : '2019-07-01', skipFailedBuilds: true)
           env.versionNumber = VersionNumber(versionNumberString : '0.9.${BUILD_DATE_FORMATTED, "yyMM"}.${BUILDS_ALL_TIME}', projectStartDate : '2019-07-01', skipFailedBuilds: true, overrideBuildsAllTime: '${NEXT_BUILD_NUMBER}')
           env.versionNumberBeta = VersionNumber(versionNumberString : '0.9.${BUILD_DATE_FORMATTED, "yyMM"}-beta.${BUILDS_ALL_TIME}', projectStartDate : '2019-07-01', skipFailedBuilds: true, overrideBuildsAllTime: '${NEXT_BUILD_NUMBER}')
diff --git a/NKC_WF/ErrorPages/Oops.aspx b/NKC_WF/ErrorPages/Oops.aspx
new file mode 100644
index 0000000..f27fb05
--- /dev/null
+++ b/NKC_WF/ErrorPages/Oops.aspx
@@ -0,0 +1,11 @@
+<%@ Page Title="" Language="C#" MasterPageFile="~/SiteContent.master" AutoEventWireup="true" CodeBehind="Oops.aspx.cs" Inherits="NKC_WF.ErrorPages.Oops" %>
+<asp:Content ID="Content1" ContentPlaceHolderID="MainContent" runat="server">
+
+  <div class="row">
+    <div class="col-4"></div>
+    <div class="col-4">
+      <asp:HyperLink runat="server" ID="hlDefault" NavigateUrl="../Default">Return to home page</asp:HyperLink>
+    </div>
+    <div class="col-4"></div>
+  </div>
+</asp:Content>
diff --git a/NKC_WF/ErrorPages/Oops.aspx.cs b/NKC_WF/ErrorPages/Oops.aspx.cs
new file mode 100644
index 0000000..8d0b95c
--- /dev/null
+++ b/NKC_WF/ErrorPages/Oops.aspx.cs
@@ -0,0 +1,17 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Web;
+using System.Web.UI;
+using System.Web.UI.WebControls;
+
+namespace NKC_WF.ErrorPages
+{
+  public partial class Oops : System.Web.UI.Page
+  {
+    protected void Page_Load(object sender, EventArgs e)
+    {
+
+    }
+  }
+}
\ No newline at end of file
diff --git a/NKC_WF/ErrorPages/Oops.aspx.designer.cs b/NKC_WF/ErrorPages/Oops.aspx.designer.cs
new file mode 100644
index 0000000..a49de20
--- /dev/null
+++ b/NKC_WF/ErrorPages/Oops.aspx.designer.cs
@@ -0,0 +1,26 @@
+//------------------------------------------------------------------------------
+// <generato automaticamente>
+//     Codice generato da uno strumento.
+//
+//     Le modifiche a questo file possono causare un comportamento non corretto e verranno perse se
+//     il codice viene rigenerato. 
+// </generato automaticamente>
+//------------------------------------------------------------------------------
+
+namespace NKC_WF.ErrorPages
+{
+
+
+  public partial class Oops
+  {
+
+    /// <summary>
+    /// Controllo hlDefault.
+    /// </summary>
+    /// <remarks>
+    /// Campo generato automaticamente.
+    /// Per la modifica, spostare la dichiarazione di campo dal file di progettazione al file code-behind.
+    /// </remarks>
+    protected global::System.Web.UI.WebControls.HyperLink hlDefault;
+  }
+}
diff --git a/NKC_WF/NKC_WF.csproj b/NKC_WF/NKC_WF.csproj
index a15ddc2..d7156bf 100644
--- a/NKC_WF/NKC_WF.csproj
+++ b/NKC_WF/NKC_WF.csproj
@@ -249,6 +249,7 @@
       <DependentUpon>SheetColor.css</DependentUpon>
     </Content>
     <Content Include="Default.aspx" />
+    <Content Include="ErrorPages\Oops.aspx" />
     <Content Include="Home.aspx" />
     <Content Include="Images\test.svg" />
     <Content Include="Images\test_1.svg" />
@@ -511,6 +512,13 @@
     <Compile Include="Default.aspx.designer.cs">
       <DependentUpon>Default.aspx</DependentUpon>
     </Compile>
+    <Compile Include="ErrorPages\Oops.aspx.cs">
+      <DependentUpon>Oops.aspx</DependentUpon>
+      <SubType>ASPXCodeBehind</SubType>
+    </Compile>
+    <Compile Include="ErrorPages\Oops.aspx.designer.cs">
+      <DependentUpon>Oops.aspx</DependentUpon>
+    </Compile>
     <Compile Include="Home.aspx.cs">
       <DependentUpon>Home.aspx</DependentUpon>
       <SubType>ASPXCodeBehind</SubType>
diff --git a/NKC_WF/Web.config b/NKC_WF/Web.config
index e01b5be..1727c9d 100644
--- a/NKC_WF/Web.config
+++ b/NKC_WF/Web.config
@@ -35,7 +35,7 @@
       <add name="ErrorMail" type="Elmah.ErrorMailModule, Elmah"/>
       <add name="ErrorFilter" type="Elmah.ErrorFilterModule, Elmah"/>
     </httpModules>
-    <customErrors mode="RemoteOnly" defaultRedirect="~/Default.aspx"/>
+    <customErrors mode="RemoteOnly" defaultRedirect="~/ErrorPages/Oops.aspx"/>
   </system.web>
   <appSettings>
     <!--Configurazioni generali-->