Hello, please see the attached image for help For closing a tab simply click the "X" button on the tab(see the image, the yellow highlighted button)

for closing the the window click on the top right corner of the window on the Red "X" button.

please reply back to us.

Are you sure you aren't getting tabs confused for windows? If you close a window containing multiple tabs, Firefox should give you a warning that you are about to close several tabs. To close a tab do one of the following:

• click the x at the right end of the tab (when you only have a few tabs open)
• open the tab you want to close, then click the x that appears
• right click the tab and select 'Close Tab'
• open the tab you want to close and press Ctrl+W

You can close a window using Ctrl+Shift+W.

If you do not see the tab bar in the window then it is possible that you are in a pop-up window and that the website has disabled the tab bar.

• http://kb.mozillazine.org/Prevent_websites_from_disabling_new_window_features