Index: Ringtoets/Common/src/Ringtoets.Common.IO/Readers/ConfigurationReader.cs
===================================================================
diff -u -r9adb7863b832fbef7249803d20750688061c846e -r8a00046f9112833f25944b0f2631c7003f7a1692
--- Ringtoets/Common/src/Ringtoets.Common.IO/Readers/ConfigurationReader.cs	(.../ConfigurationReader.cs)	(revision 9adb7863b832fbef7249803d20750688061c846e)
+++ Ringtoets/Common/src/Ringtoets.Common.IO/Readers/ConfigurationReader.cs	(.../ConfigurationReader.cs)	(revision 8a00046f9112833f25944b0f2631c7003f7a1692)
@@ -23,6 +23,8 @@
 using System.Collections.Generic;
 using System.IO;
 using System.Linq;
+using System.Net;
+using System.Text;
 using System.Xml;
 using System.Xml.Linq;
 using System.Xml.Schema;
@@ -146,7 +148,10 @@
         /// <exception cref="CriticalFileReadException">Thrown when the provided XML document does not match the provided XML Schema Definition (XSD).</exception>
         private static void ValidateToSchema(XDocument document, string schemaString, string xmlFilePath)
         {
-            var xmlSchemaSet = new XmlSchemaSet();
+            var xmlSchemaSet = new XmlSchemaSet
+            {
+                XmlResolver = new XmlResourcesResolver()
+            };
 
             try
             {
@@ -213,5 +218,31 @@
             return new ReadCalculationGroup(folderElement.Attribute(ConfigurationSchemaIdentifiers.NameAttribute)?.Value,
                                             ParseElements(folderElement.Elements()));
         }
+
+        private class XmlResourcesResolver : XmlResolver
+        {
+            public override ICredentials Credentials
+            {
+                set
+                {
+                    throw new NotImplementedException();
+                }
+            }
+
+            public override object GetEntity(Uri absoluteUri, string role, Type ofObjectToReturn)
+            {
+                switch (Path.GetFileName(absoluteUri.ToString()))
+                {
+                    case "ConfiguratieSchema.xsd":
+                        return new MemoryStream(Encoding.UTF8.GetBytes(Resources.ConfiguratieSchema));
+                    case "StochastSchema.xsd":
+                        return new MemoryStream(Encoding.UTF8.GetBytes(Resources.StochastSchema));
+                    case "HrLocatieSchema.xsd":
+                        return new MemoryStream(Encoding.UTF8.GetBytes(Resources.HrLocatieSchema));
+                }
+
+                return null;
+            }
+        }
     }
 }
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