I too have never encountered the "Sign In" tab nor would I ever click on it and sign in since it could represent an attempt to get you to give your sign-in credentials to some hacker. Simply closing the tab should solve the problem and if it doesn't then if it were me I would reset my browser to take it back to its original state. Which browser are you using?
Well, whatever it's called, the "Sign in" has disappeared, so I'm happy!
What do you call the strip above the Address Bar - where all the tabs stay till they're closed?
My viewing area is 11.5"x26.5". So I keep my Task Bar on the left in a vertical orientation. The tabs sit rite next to it with no windows thing-a-ma-jiggy in it. The Windows Start icon does appear at the top of the Task Bar always.
I too have never encountered the "Sign In" tab nor would I ever click on it and sign in since it could represent an attempt to get you to give your sign-in credentials to some hacker. Simply closing the tab should solve the problem and if it doesn't then if it were me I would reset my browser to take it back to its original state. Which browser are you using?
This appeared after MS wanted me to sign in. I didn't, so "sign in" appeared up there for a while. Right now, my little round picture is there. Clicking on it gets me the MS "Wallet."