問題如下：
We were unable to establish the connection because it is configured
for user [email protected] but you attempted to connect using user
[email protected]. To connect as a different user perform a switch user
operation. To connect with the configured identity just attempt the
last operation again.
需要把舊賬號的信息清除掉：
1.進入vs2013的安裝目錄D:\vs2013\vs\Common7\Tools\Shortcuts
2.以管理員身份打開快捷方式Developer Command Prompt for VS2013
3.輸入devenv /resetuserdata
4.重新打開軟件即可
參考：https://stackoverflow.com/questions/19517673/how-can-i-switch-my-signed-in-user-in-visual-studio-2013#
