MSDN 错误，不能使用解决办法

今天用MSDN查个东西，居然显示如下页面：

File Association

Windows has the following information about this Protocol. This page will help you find software needed to open your file.

Protocol Type: res

Description: UnKnown

Windows does not recognize this Protocol.

You can search the following Web site for related software and information:
Windows Live Search

Have questions? See these Frequently Asked Questions.

安装后第一次使用，郁闷，看了下好像是什么协议不识别。Google了下，问题解决。

方法：在“运行”里输入：regsvr32 "C:/Program Files/Common Files/Microsoft Shared/Help/hxds.dll"

确定，弹出如下框，dll注册成功。



再去MSDN，ok了。特记下。