Getting Error 1017

[nazeroth77]

Hello all, I'll try and make this short and sweet.

I have played P99 on this PC, but took a break before Velious dropped on green (just mentioning because I'm not sure if this plays a part). I play on Green, but whenever I try and login I can get through my Username/Password and select a server. I get pulled back to login screen, if I try to log in again immediately (In the Username/Password section) I get the 1017 error. It doesn't matter what server I try to join, it is the same issue.

How can I fix this problem so I can play again?