web报错Could not load file or assembly or one of its dependencies. Access is denied.

Could not load file or assembly  or one of its dependencies. Access is denied.

<httpModules>
      <!--ajax异步调用组件-->
      <add name="NonstaticPageMethodModule" type="NonstaticPageMethod.PageMethodModule, NonstaticPageMethod"/>
      <add name="ScriptModule" type="System.Web.Handlers.ScriptModule, System.Web.Extensions, Version=1.0.61025.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
      <add name="SecurityModule" type="mycom.Web.Modules.HttpSecurityModule"/>
    </httpModules>

dll无权限访问，  解决方法： 把当前web目录改名称， 新建通名称目录，再吧内容拷过去，就可以了。。

比较神奇，感觉是清除了临时文件，重新去编译。