1
Go to the Dropbox login page and log in using the email and password associated with your Dropbox account. Note: Make sure you log in using the Dropbox account you used to join the shared folder originally.
2
Click the small arrow next to the shared folder you want to leave followed by “Shared folder options” from the context menu.
3
Click the “Members” tab at the top of the Shared folder options dialog.
4
Click the “Leave this shared folder” button.
5
Click the blue “Leave Shared Folder” button when prompted to confirm the action to leave the folder