diff --git a/src-setup/org/opencms/setup/CmsUpdateBean.java b/src-setup/org/opencms/setup/CmsUpdateBean.java
index 419ae45370d..d177c6cf163 100644
--- a/src-setup/org/opencms/setup/CmsUpdateBean.java
+++ b/src-setup/org/opencms/setup/CmsUpdateBean.java
@@ -59,22 +59,18 @@
 import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.Collections;
-import java.util.Enumeration;
 import java.util.HashMap;
 import java.util.HashSet;
 import java.util.Iterator;
 import java.util.List;
 import java.util.Map;
 import java.util.Set;
-import java.util.jar.JarEntry;
-import java.util.jar.JarFile;
 
 import javax.servlet.jsp.JspWriter;
 
 import org.apache.commons.logging.Log;
 
 import com.google.common.collect.Lists;
-import com.google.common.collect.MapMaker;
 
 /**
  * A java bean as a controller for the OpenCms update wizard.<p>
@@ -516,58 +512,6 @@ public boolean isNeedDbUpdate() {
         return m_detectedVersion != 8;
     }
 
-    /**
-     * Try to preload necessary classes, to avoid ugly class loader issues caused by JARs being deleted during the update.
-     */
-    public void preload() {
-
-        //opencms.jar
-        preload(OpenCms.class);
-
-        //guava
-        preload(MapMaker.class);
-
-        //xerces
-        preload(org.apache.xerces.impl.Constants.class);
-    }
-
-    /**
-     * Preloads classes from the same jar file as a given class.<p>
-     *
-     * @param cls the class for which the classes from the same jar file should be loaded
-     */
-    public void preload(Class<?> cls) {
-
-        try {
-            File jar = new File(cls.getProtectionDomain().getCodeSource().getLocation().getFile());
-            java.util.jar.JarFile jarfile = new JarFile(jar);
-            try {
-                Enumeration<JarEntry> entries = jarfile.entries();
-                while (entries.hasMoreElements()) {
-                    JarEntry entry = entries.nextElement();
-                    String name = entry.getName();
-                    if (name.endsWith(".class")) {
-                        String className = name.replaceFirst("\\.class$", "");
-                        className = className.replace('/', '.');
-                        try {
-                            Class.forName(className);
-                        } catch (VirtualMachineError e) {
-                            throw e;
-                        } catch (Throwable e) {
-                            LOG.error(e.getLocalizedMessage(), e);
-                        }
-                    }
-                }
-            } finally {
-                jarfile.close();
-            }
-        } catch (VirtualMachineError e) {
-            throw e;
-        } catch (Throwable e) {
-            LOG.error(e.getLocalizedMessage(), e);
-        }
-    }
-
     /**
      * Prepares step 1 of the update wizard.<p>
      */
@@ -644,7 +588,6 @@ public void prepareUpdateStep1bOutput(JspWriter out) throws IOException {
     public void prepareUpdateStep5() {
 
         if (isInitialized()) {
-            preload();
             try {
                 String fileName = getWebAppRfsPath() + FOLDER_UPDATE + "cmsupdate";
                 // read the file