odoo报错AccessDenied: Access denied.解决办法

Traceback (most recent call last):
  File "D:\Odoo\source\openerp\http.py", line 537, in _handle_exception
    return super(JsonRequest, self)._handle_exception(exception)
  File "D:\Odoo\source\openerp\http.py", line 574, in dispatch
    result = self._call_function(**self.params)
  File "D:\Odoo\source\openerp\http.py", line 311, in _call_function
    return self.endpoint(*args, **kwargs)
  File "D:\Odoo\source\openerp\http.py", line 803, in __call__
    return self.method(*args, **kw)
  File "D:\Odoo\source\openerp\http.py", line 403, in response_wrap
    response = f(*args, **kw)
  File "D:\Odoo\source\addons\web\controllers\main.py", line 703, in create
    params['create_admin_pwd'])
  File "D:\Odoo\source\openerp\http.py", line 879, in proxy_method
    result = dispatch_rpc(self.service_name, method, args)
  File "D:\Odoo\source\openerp\http.py", line 115, in dispatch_rpc
    result = dispatch(method, params)
  File "D:\Odoo\source\openerp\service\db.py", line 65, in dispatch
    security.check_super(passwd)
  File "D:\Odoo\source\openerp\service\security.py", line 32, in check_super
    raise openerp.exceptions.AccessDenied()
AccessDenied: Access denied.
原因是改动了Master password:的默认密码导致的。初始密码为：admin