Hi there....Not sure if this will help any...but I have the same problem and it's caused by a third party browser extension...It took me a while to discover this but all you need to do is make sure the box is ''Unticked''...you can always click it back on again if you need to.Mine is caused by a program that signs me automatically called SSO.....When you open the explorer page,before opening a new page go to Tools..Internet options....Advanced...scroll down to Browsing and untick the ''Enable third part browsing extensions''...if it's ticked that is....It might not be that but give it a try anyway..