My firewall was blocking Steam while I was logging in and failing. Now I am locked out of Steam and need an access code to log in. There seems to be no way to tell the Steam servers to send this code and I didn't get one in my email anywhere (checked all folders and searched for "steam").
I sent Support an email but haven't got a response in over a day now. This seems like an incredibly easy thing to fix if they could just send an email with the code.
Is there really nothing else I can do except just wait an unknown amount of time until my ticket is finally seen?
Edit: Steam support was useless, took 4 days, and only reset my password which I could already do and did. They clearly didn't read the ticket info I provided because I stated that.. clearly. They did not resend the Steam Guard pass-code and as of now it is simply disabled. Not sure whether I will be able to log in or get it working if I do re-enable it.
Best Answer
Well, one way to regain access is to reset your password. If Steam Guard did make some server-side error, password reset emails should be unaffected. Once one arrives, reset your password to the same one (Steam doesn't check for previously-used passwords) and that will bypass Steam Guard. Once you're in, try disabling and re-enabling Steam Guard from Steam's settings. Then try logging out and back in to make sure Steam Guard emails are now sent.