The hunted steammarket, a strange case that even support dont understand

boobies ( . Y . )

Do you clear your cookies? If so it wipes out the tracking cookie Steam uses to track usage. Without it Steam thinks your machine/browser is a new machine and does the whole lock out thing for 15 days. If that is the case, a selective cookie remover might be something worth looking in to for you.

Unfortunately I too have problems but only when using the steam client. You did mention browser so I'm assuming thats what you're using (which works perfectly fine for me). Besides that I have no idea, steam market place always has problems.

I experienced that last week, I just waited a couple of days and its gone.

Isso aconteceu com uma amiga minha faz um tempo, parece que desativando o Steam Guard volta ao normal.

Try relogging in. If that works, then praise GabeN.

as it says, your account is being logged in a different device, therefore the safety mechanism is to disable the steam markplace. If you use the app then that is probably what is doing it and if not then you should prob change password and security questions

it can also get triggered if you change your IP or use VPN's

I relogged @http://store.steampowered.com/ and it works now, thanks for participating