Signing in for the first time everyday is a trouble. I have to type my user ID, password and then the page refreshes as if I did not type the password. I have to type the password again and only then it moves on to the second step of the authentication.
Another problem is - if multiple windows are open, every window and even sometimes, few more links from each page - also seek the 2-step verification. So even if I signed in on tab 1 in my IE window; in the very next moment, the tab 2 in same window asks for the sign in and verification again. This is very time taking and reduces productivity and smooth working.