[header] How to block facebook messages on a pc or mac [title] Go to https: // www.facebook.com in a web browser. [step] If you're already signed in, facebook will open to your news feed. [substeps] If you see the login screen, type your account information into the blanks at the top-right corner of the page, then click log in. 
[title] Click the gear icon on the chat panel. [step] The chat panel is at the bottom-right corner of facebook, and the gear icon is at its bottom-left corner.