每次我点击查看一封邮件或者"Reply"的时候，总是有一个 pop up message:

A program is trying to access e-mail addresses you have stored in Outlook.Do you want to allow this?

If this is unexpected, it may be a virus and you should choose"NO".
...

请问这是什么原因阿？该怎样解决？

Thanks!

try to disable them and try again.