The url is a company portal and it needs the Citrix Online Plugin for Web to access it. But in some reasons I can access the website. I already updated the said plugin and install previous version of Firefox to test if the solution from this post will work. https://support.mozilla.org/en-US/questions/963683#answer-455260. But none of the solution works for me. Firefox version 21.0 Citrix Online Plugin for web version 12.3 Thanks for help. I hope i get some solution this week.