I got mail from Gmail saying someone from a certain IP tried to log-in and it was prevented and that I should reset my password by following the given link if I don't recognise the address.
…We prevented the sign-in attempt in case this was a hijacker trying to access your account…
However, this is not from a hijacker but from an application I set up some time ago. Now it can not access my account. How can I remove the prevention of the sign-in?
Best Answer
You should be able to use Google's Unlock Catpcha to unblock your application. I can't find much official doco on it, but according to this post if you unlock with the captcha logins for the next ten minutes are recognised as legitimate.