A: Most of the time, if you provide your correct email (or user name) and password, you will get logged into Facebook Chat as expected.
Sometimes, Facebook users may get the following errors on logging into our service:

which says “Failed to connect”, “Trying to connect server failed!” and “You need to log into Facebook official website to confirm your account!”.
Don’t be panic about this error. It is a normal error our Facebook Chat users will meet with.
In fact, Facebook thinks that your logging into Facebook from our KarooLark servers, located in USA, is an unusual login activity. Facebook refuse our requests to login and ask to you to verify your account and review you recent activities in its official Facebook home page.
So you must login Facebook official website to confirm your account first. (If you are blocked to access Facebook at your office or school, you need to visit Facebook at home or use proxy to access it)
By logging into Facebook with your email and password, you will be redirected to https://ssl.facebook.com/roadblock/ :

Then you can follow the instructions inside the page:

On review recent activity, select “This is Okay” and continue to confirm your account.
Once you finish reviewing your account, you have confirmed that using ourĀ web FBChat is a normal login and you can login our Karoo Lark web Facebook Chat later without errors!
We hope that you know why you get error on logging into our web Facebook Chat and know how to solve it and continue to use our web chat service.