修改该目录里的配置文件

C:\users\[登陆账户ID]\AppData\Local\Microsoft\VisualStudio\10.0\browsers.xml

修改为

<?xml version="1.0"?><browserinfo><browser><name>Mozilla Firefox</name><path>"C:\Program Files (x86)\Mozilla Firefox\firefox.exe"</path><resolution>0</resolution><isdefault>True</isdefault></browser><browser><name>Internet Explorer</name><path>"C:\Program Files (x86)\Internet Explorer\iexplore.exe"</path><resolution>0</resolution><isdefault>False</isdefault><dde><service>IExplore</service><topicopenurl>WWW_OpenURL</topicopenurl><itemopenurl>"%s",,0xffffffff,3,,,,</itemopenurl><topicactivate>WWW_Activate</topicactivate><itemactivate>0xffffffff,0</itemactivate></dde></browser></browserinfo>

然后保存为只读，Ok了