tortoise svn无法连接到服务器，清空“Autherticate data”后，再进行更新，提交，log查看等操作，svn还是不提示输入用户名和密码，而是报：  

error: Unable to connect to a repository at URL Error: Error running context: No connection could be made because the target machine Error: actively refused it.

解决此问题方法，清空两个目录（我的电脑是win7-x64）即可:  

C:\Users\Administrator\AppData\Roaming\TortoiseSVN

C:\Users\Administrator\AppData\Roaming\Subversion