Fail to log in to a website

Hello I am trying to log in to my job's e-mail(they use microsoft outlook).  I log in  but the website security window keeps popping up and wants me to enter and re-enter my password which I do, but It doesnt go through.  I only get a blank page.  I already tried to change the firewall to interactive and  restart but didn't work.  I called my job's technology rep.  she states that it is my internet server(but I had never had problems before until I installed AVG…??)  What can I do?

Hi Maria,
Did you try temporarily disabling AVG to see if it helps on your issue?
Thanks

Hi Maria,
Did you try temporarily disabling AVG to see if it helps on your issue?
Thanks