Someone in my account is online.but i see his status is offline.

Go to settings and select status, then either chose a preset option or write your own!

Hello and Welcome to Fixya!

Actually may be your status on Facebook is as "Offline" that's why it is not showing you the chat box, first you have to make your status as "online"
For this log in your Facebook account, when your home page will open, On the left side down on the page there will be written that "you are currently offline to chat with your friends "Go online". Click on it and your status will become online and your chat box will open on the bottom of the page. If you have done this and problem is still there then may be the problem is in your browser, in this situation try to log in with other browser, After this if you have still this problem then may be you are blocked to chat from Facebook or there is a problem in Facebook server, then wait for a while it will probably fix soon.

I hope you have a clear picture now in your mind and this solution helps you.Let me know If you have further confusion regarding your problem
Thank you and Keep Visiting FixYa

Yahoo! Messenger gives you the option to make your status appear "online", "busy" or "offline." If you want to appear online all the time you must set the messenger to do so, especially if you changed it to a different setting at any point.

1.Sign On
In order to set your instant messenger to "online" you must sign in to your account. You should use your Yahoo! email address and password to sign in to the account. If you want the program to sign you in automatically, you must check these options on the initial sign in box.

2. Settings
Click your name at the top of the "friends" list and change your setting to "available." Available means you are online at your computer and ready to chat.

3. Changes
No changes are made to your status unless you sign off (which you will then appear offline) or if you physically change your setting. It does not change every time you sign off.

I hope you find it very helpful. Thanks

If you chatting online with someone and your status is set offline no one can see you, the person your chatting with knows you are online but he/she can not see you, if this answers your question then am a mind reader.

Hello and Welcome to Fixya!
Actually your status on Facebook is as "Offline" that's why it is showing you offline,
To become online you have to make your status as "online"
For this sign in your Facebook account, when your home page will open, On the left side down on the page there will be written that "you are currently offline to chat with your friends "Go online". Click on it and your status will become online. To demonstrate it physically here given is a Picture which will surely help you out



I hope this solution helps you
Any more confusion, queries or for further assistance, I am here to help.
Thank you and Keep Visiting FixYa

Hello thanks for using fixya
Actually may be your status on Facebook is as "Offline", that's why you are not able to chat

You have to make your status as "online"
For this sign in your Facebook account, when your home page will open, On the left side down on the page there will be written that "you are currently offline to chat with your friends "Go online". Click on it and your status will become online. To demonstrate it physically here given is a Picture which will surely help you out






If it not works the try to change your browser and the sign in again to Facebook, I hope it will work

For further assistance, I am here to help.
Concerned: Uxair Shah

Hello thanks for using fixya
Actually your status on Facebook is as "Offline", thats why you are not able to chat with your friends and you appear them as "Offline"
To chat with your friends and make you visible you have to make your status as "online"
For this sign in your Facebook account, when your home page will open, On the left side down on the page there will be written that "you are currently offline to chat with your friends "Go online". Click on it and your status will become online. To demonstrate it physically here given is a Picture which will surely help you out




I hope this solution will helpful 4 u
Please don't forget to click on Four thumbs which are given below if it is helpful
THANKS & Keep Using Fixya

Your status may be set to "invisible," which means you may appear offline when you are truly online.

Do you mean it says "offline" under the printer icon in your PC's printer dialog box?
Right click it , then select "use printer online".

Please let me know