windows search for "configure java" or go into control panel and double click java. goto to security tab, at the exceptions site list goto edit site list button. add
http://armorcritical.com/ ---- do not misspell it or it wont add it.
Have java 8 update 91 or earlier for the game to even work. If you need to use your browser and in AC settings use JNLP mode. which downloads a file - you open it and have to check a few boxes or OK some prompts. should work - windows vista windows 10 using chrome.
Make sure to uninstall and newer or older versions of java too. GL