Internet Explorer : while click on attach button by any mail like Gmail ,Yahoomail , it asks for password and says multiple conection to a server or shared resource by the same user or another user are not allowed.

while click on attach button by any mail like Gmail ,Yahoomail , it asks for password and says multiple conection to a server or shared resource  by the same user or another user are not allowed.

It works fine with fire fox and Chrome. 

After putting password also it says access denied.