Just to add a suggestion here, as i tried the above solution but some of the options there weren't available on my IE. Because i had been trying to download blinkbox via the W8 store and it wouldn't allow me to "sorry we could not sign you in" was my reply each time. I have tried changing my password to my hotmail acc, but it still didn't work. As a last resort i signed out of my toshiba laptop, about to give up, when i tried one last time. Previously i have still been logging into my laptop using the pword i originally set up and it allowed me to sign in (even tho i had changed my pword before via hotmail), this time it occured to me to try logging in with the new one, it signed me in and then asked me to confirm mobile digits so they could send me a security code. Once that was done, i went back into the store and my downloads went thru no problem. *hooray*