diff --git a/src/main/java/org/parabot/Landing.java b/src/main/java/org/parabot/Landing.java
index 33668d8..587411b 100644
--- a/src/main/java/org/parabot/Landing.java
+++ b/src/main/java/org/parabot/Landing.java
@@ -27,21 +27,8 @@ import java.net.URI;
 public final class Landing {
 	private static String username;
 	private static String password;
-
-	private static void removeKeys(){
-		try{
-			WinRegistry.deleteKey(
-					WinRegistry.HKEY_CURRENT_USER,
-					"Software\\JavaSoft\\Prefs"
-			);
-		}catch (Exception ignored){
-
-		}
-	}
-
 	public static void main(String... args) throws IOException {
 		parseArgs(args);
-		removeKeys();
 
 		Core.verbose("Debug mode: " + Core.inDebugMode());
 
diff --git a/src/main/java/org/parabot/WinRegistry.java b/src/main/java/org/parabot/WinRegistry.java
deleted file mode 100644
index 50091cd..0000000
--- a/src/main/java/org/parabot/WinRegistry.java
+++ /dev/null
@@ -1,390 +0,0 @@
-package org.parabot;
-
-import java.lang.reflect.InvocationTargetException;
-import java.lang.reflect.Method;
-import java.util.HashMap;
-import java.util.Map;
-import java.util.ArrayList;
-import java.util.List;
-import java.util.prefs.Preferences;
-
-public class WinRegistry {
-  public static final int HKEY_CURRENT_USER = 0x80000001;
-  public static final int HKEY_LOCAL_MACHINE = 0x80000002;
-  public static final int REG_SUCCESS = 0;
-  public static final int REG_NOTFOUND = 2;
-  public static final int REG_ACCESSDENIED = 5;
-
-  private static final int KEY_ALL_ACCESS = 0xf003f;
-  private static final int KEY_READ = 0x20019;
-  private static Preferences userRoot = Preferences.userRoot();
-  private static Preferences systemRoot = Preferences.systemRoot();
-  private static Class<? extends Preferences> userClass = userRoot.getClass();
-  private static Method regOpenKey = null;
-  private static Method regCloseKey = null;
-  private static Method regQueryValueEx = null;
-  private static Method regEnumValue = null;
-  private static Method regQueryInfoKey = null;
-  private static Method regEnumKeyEx = null;
-  private static Method regCreateKeyEx = null;
-  private static Method regSetValueEx = null;
-  private static Method regDeleteKey = null;
-  private static Method regDeleteValue = null;
-
-  static {
-    try {
-      regOpenKey = userClass.getDeclaredMethod("WindowsRegOpenKey",
-          new Class[] { int.class, byte[].class, int.class });
-      regOpenKey.setAccessible(true);
-      regCloseKey = userClass.getDeclaredMethod("WindowsRegCloseKey",
-          new Class[] { int.class });
-      regCloseKey.setAccessible(true);
-      regQueryValueEx = userClass.getDeclaredMethod("WindowsRegQueryValueEx",
-          new Class[] { int.class, byte[].class });
-      regQueryValueEx.setAccessible(true);
-      regEnumValue = userClass.getDeclaredMethod("WindowsRegEnumValue",
-          new Class[] { int.class, int.class, int.class });
-      regEnumValue.setAccessible(true);
-      regQueryInfoKey = userClass.getDeclaredMethod("WindowsRegQueryInfoKey1",
-          new Class[] { int.class });
-      regQueryInfoKey.setAccessible(true);
-      regEnumKeyEx = userClass.getDeclaredMethod(
-          "WindowsRegEnumKeyEx", new Class[] { int.class, int.class,
-              int.class });
-      regEnumKeyEx.setAccessible(true);
-      regCreateKeyEx = userClass.getDeclaredMethod(
-          "WindowsRegCreateKeyEx", new Class[] { int.class,
-              byte[].class });
-      regCreateKeyEx.setAccessible(true);
-      regSetValueEx = userClass.getDeclaredMethod(
-          "WindowsRegSetValueEx", new Class[] { int.class,
-              byte[].class, byte[].class });
-      regSetValueEx.setAccessible(true);
-      regDeleteValue = userClass.getDeclaredMethod(
-          "WindowsRegDeleteValue", new Class[] { int.class,
-              byte[].class });
-      regDeleteValue.setAccessible(true);
-      regDeleteKey = userClass.getDeclaredMethod(
-          "WindowsRegDeleteKey", new Class[] { int.class,
-              byte[].class });
-      regDeleteKey.setAccessible(true);
-    }
-    catch (Exception e) {
-      e.printStackTrace();
-    }
-  }
-
-  private WinRegistry() {  }
-
-  /**
-   * Read a value from key and value name
-   * @param hkey   HKEY_CURRENT_USER/HKEY_LOCAL_MACHINE
-   * @param key
-   * @param valueName
-   * @return the value
-   * @throws IllegalArgumentException
-   * @throws IllegalAccessException
-   * @throws InvocationTargetException
-   */
-  public static String readString(int hkey, String key, String valueName)
-    throws IllegalArgumentException, IllegalAccessException,
-    InvocationTargetException
-  {
-    if (hkey == HKEY_LOCAL_MACHINE) {
-      return readString(systemRoot, hkey, key, valueName);
-    }
-    else if (hkey == HKEY_CURRENT_USER) {
-      return readString(userRoot, hkey, key, valueName);
-    }
-    else {
-      throw new IllegalArgumentException("hkey=" + hkey);
-    }
-  }
-
-  /**
-   * Read value(s) and value name(s) form given key
-   * @param hkey  HKEY_CURRENT_USER/HKEY_LOCAL_MACHINE
-   * @param key
-   * @return the value name(s) plus the value(s)
-   * @throws IllegalArgumentException
-   * @throws IllegalAccessException
-   * @throws InvocationTargetException
-   */
-  public static Map<String, String> readStringValues(int hkey, String key)
-    throws IllegalArgumentException, IllegalAccessException,
-    InvocationTargetException
-  {
-    if (hkey == HKEY_LOCAL_MACHINE) {
-      return readStringValues(systemRoot, hkey, key);
-    }
-    else if (hkey == HKEY_CURRENT_USER) {
-      return readStringValues(userRoot, hkey, key);
-    }
-    else {
-      throw new IllegalArgumentException("hkey=" + hkey);
-    }
-  }
-
-  /**
-   * Read the value name(s) from a given key
-   * @param hkey  HKEY_CURRENT_USER/HKEY_LOCAL_MACHINE
-   * @param key
-   * @return the value name(s)
-   * @throws IllegalArgumentException
-   * @throws IllegalAccessException
-   * @throws InvocationTargetException
-   */
-  public static List<String> readStringSubKeys(int hkey, String key)
-    throws IllegalArgumentException, IllegalAccessException,
-    InvocationTargetException
-  {
-    if (hkey == HKEY_LOCAL_MACHINE) {
-      return readStringSubKeys(systemRoot, hkey, key);
-    }
-    else if (hkey == HKEY_CURRENT_USER) {
-      return readStringSubKeys(userRoot, hkey, key);
-    }
-    else {
-      throw new IllegalArgumentException("hkey=" + hkey);
-    }
-  }
-
-  /**
-   * Create a key
-   * @param hkey  HKEY_CURRENT_USER/HKEY_LOCAL_MACHINE
-   * @param key
-   * @throws IllegalArgumentException
-   * @throws IllegalAccessException
-   * @throws InvocationTargetException
-   */
-  public static void createKey(int hkey, String key)
-    throws IllegalArgumentException, IllegalAccessException,
-    InvocationTargetException
-  {
-    int [] ret;
-    if (hkey == HKEY_LOCAL_MACHINE) {
-      ret = createKey(systemRoot, hkey, key);
-      regCloseKey.invoke(systemRoot, new Object[] { new Integer(ret[0]) });
-    }
-    else if (hkey == HKEY_CURRENT_USER) {
-      ret = createKey(userRoot, hkey, key);
-      regCloseKey.invoke(userRoot, new Object[] { new Integer(ret[0]) });
-    }
-    else {
-      throw new IllegalArgumentException("hkey=" + hkey);
-    }
-    if (ret[1] != REG_SUCCESS) {
-      throw new IllegalArgumentException("rc=" + ret[1] + "  key=" + key);
-    }
-  }
-
-  /**
-   * Write a value in a given key/value name
-   * @param hkey
-   * @param key
-   * @param valueName
-   * @param value
-   * @throws IllegalArgumentException
-   * @throws IllegalAccessException
-   * @throws InvocationTargetException
-   */
-  public static void writeStringValue
-    (int hkey, String key, String valueName, String value)
-    throws IllegalArgumentException, IllegalAccessException,
-    InvocationTargetException
-  {
-    if (hkey == HKEY_LOCAL_MACHINE) {
-      writeStringValue(systemRoot, hkey, key, valueName, value);
-    }
-    else if (hkey == HKEY_CURRENT_USER) {
-      writeStringValue(userRoot, hkey, key, valueName, value);
-    }
-    else {
-      throw new IllegalArgumentException("hkey=" + hkey);
-    }
-  }
-
-  /**
-   * Delete a given key
-   * @param hkey
-   * @param key
-   * @throws IllegalArgumentException
-   * @throws IllegalAccessException
-   * @throws InvocationTargetException
-   */
-  public static void deleteKey(int hkey, String key)
-    throws IllegalArgumentException, IllegalAccessException,
-    InvocationTargetException
-  {
-    int rc = -1;
-    if (hkey == HKEY_LOCAL_MACHINE) {
-      rc = deleteKey(systemRoot, hkey, key);
-    }
-    else if (hkey == HKEY_CURRENT_USER) {
-      rc = deleteKey(userRoot, hkey, key);
-    }
-    if (rc != REG_SUCCESS) {
-      throw new IllegalArgumentException("rc=" + rc + "  key=" + key);
-    }
-  }
-
-  /**
-   * delete a value from a given key/value name
-   * @param hkey
-   * @param key
-   * @param value
-   * @throws IllegalArgumentException
-   * @throws IllegalAccessException
-   * @throws InvocationTargetException
-   */
-  public static void deleteValue(int hkey, String key, String value)
-    throws IllegalArgumentException, IllegalAccessException,
-    InvocationTargetException
-  {
-    int rc = -1;
-    if (hkey == HKEY_LOCAL_MACHINE) {
-      rc = deleteValue(systemRoot, hkey, key, value);
-    }
-    else if (hkey == HKEY_CURRENT_USER) {
-      rc = deleteValue(userRoot, hkey, key, value);
-    }
-    if (rc != REG_SUCCESS) {
-      throw new IllegalArgumentException("rc=" + rc + "  key=" + key + "  value=" + value);
-    }
-  }
-
-  // =====================
-
-  private static int deleteValue
-    (Preferences root, int hkey, String key, String value)
-    throws IllegalArgumentException, IllegalAccessException,
-    InvocationTargetException
-  {
-    int[] handles = (int[]) regOpenKey.invoke(root, new Object[] {
-        new Integer(hkey), toCstr(key), new Integer(KEY_ALL_ACCESS) });
-    if (handles[1] != REG_SUCCESS) {
-      return handles[1];  // can be REG_NOTFOUND, REG_ACCESSDENIED
-    }
-    int rc =((Integer) regDeleteValue.invoke(root,
-        new Object[] {
-          new Integer(handles[0]), toCstr(value)
-          })).intValue();
-    regCloseKey.invoke(root, new Object[] { new Integer(handles[0]) });
-    return rc;
-  }
-
-  private static int deleteKey(Preferences root, int hkey, String key)
-    throws IllegalArgumentException, IllegalAccessException,
-    InvocationTargetException
-  {
-    int rc =((Integer) regDeleteKey.invoke(root,
-        new Object[] { new Integer(hkey), toCstr(key) })).intValue();
-    return rc;  // can REG_NOTFOUND, REG_ACCESSDENIED, REG_SUCCESS
-  }
-
-  private static String readString(Preferences root, int hkey, String key, String value)
-    throws IllegalArgumentException, IllegalAccessException,
-    InvocationTargetException
-  {
-    int[] handles = (int[]) regOpenKey.invoke(root, new Object[] {
-        new Integer(hkey), toCstr(key), new Integer(KEY_READ) });
-    if (handles[1] != REG_SUCCESS) {
-      return null;
-    }
-    byte[] valb = (byte[]) regQueryValueEx.invoke(root, new Object[] {
-        new Integer(handles[0]), toCstr(value) });
-    regCloseKey.invoke(root, new Object[] { new Integer(handles[0]) });
-    return (valb != null ? new String(valb).trim() : null);
-  }
-
-  private static Map<String,String> readStringValues
-    (Preferences root, int hkey, String key)
-    throws IllegalArgumentException, IllegalAccessException,
-    InvocationTargetException
-  {
-    HashMap<String, String> results = new HashMap<String,String>();
-    int[] handles = (int[]) regOpenKey.invoke(root, new Object[] {
-        new Integer(hkey), toCstr(key), new Integer(KEY_READ) });
-    if (handles[1] != REG_SUCCESS) {
-      return null;
-    }
-    int[] info = (int[]) regQueryInfoKey.invoke(root,
-        new Object[] { new Integer(handles[0]) });
-
-    // int count = info[2]; // count
-    int count = info[0];    // bug fix 20130112
-    int maxlen = info[3]; // value length max
-    for(int index=0; index<count; index++)  {
-      byte[] name = (byte[]) regEnumValue.invoke(root, new Object[] {
-          new Integer
-            (handles[0]), new Integer(index), new Integer(maxlen + 1)});
-      String value = readString(hkey, key, new String(name));
-      results.put(new String(name).trim(), value);
-    }
-    regCloseKey.invoke(root, new Object[] { new Integer(handles[0]) });
-    return results;
-  }
-
-  private static List<String> readStringSubKeys
-    (Preferences root, int hkey, String key)
-    throws IllegalArgumentException, IllegalAccessException,
-    InvocationTargetException
-  {
-    List<String> results = new ArrayList<String>();
-    int[] handles = (int[]) regOpenKey.invoke(root, new Object[] {
-        new Integer(hkey), toCstr(key), new Integer(KEY_READ)
-        });
-    if (handles[1] != REG_SUCCESS) {
-      return null;
-    }
-    int[] info = (int[]) regQueryInfoKey.invoke(root,
-        new Object[] { new Integer(handles[0]) });
-
-    // int count = info[2]; // count
-    int count = info[0];    // bug fix 20130112
-    int maxlen = info[3]; // value length max
-    for(int index=0; index<count; index++)  {
-      byte[] name = (byte[]) regEnumKeyEx.invoke(root, new Object[] {
-          new Integer
-            (handles[0]), new Integer(index), new Integer(maxlen + 1)
-          });
-      results.add(new String(name).trim());
-    }
-    regCloseKey.invoke(root, new Object[] { new Integer(handles[0]) });
-    return results;
-  }
-
-  private static int [] createKey(Preferences root, int hkey, String key)
-    throws IllegalArgumentException, IllegalAccessException,
-    InvocationTargetException
-  {
-    return  (int[]) regCreateKeyEx.invoke(root,
-        new Object[] { new Integer(hkey), toCstr(key) });
-  }
-
-  private static void writeStringValue
-    (Preferences root, int hkey, String key, String valueName, String value)
-    throws IllegalArgumentException, IllegalAccessException,
-    InvocationTargetException
-  {
-    int[] handles = (int[]) regOpenKey.invoke(root, new Object[] {
-        new Integer(hkey), toCstr(key), new Integer(KEY_ALL_ACCESS) });
-
-    regSetValueEx.invoke(root,
-        new Object[] {
-          new Integer(handles[0]), toCstr(valueName), toCstr(value)
-          });
-    regCloseKey.invoke(root, new Object[] { new Integer(handles[0]) });
-  }
-
-  // utility
-  private static byte[] toCstr(String str) {
-    byte[] result = new byte[str.length() + 1];
-
-    for (int i = 0; i < str.length(); i++) {
-      result[i] = (byte) str.charAt(i);
-    }
-    result[str.length()] = 0;
-    return result;
-  }
-}
\ No newline at end of file