Your browser's AutoFill feature automatically saves all email addresses that are entered in the Email or Phone field of the Facebook Login page. To remove your address from the website's Login field, erase your browser's saved form data through the History section of its Settings menu. To prevent automatic access to your Facebook account whenever you visit the website, clear the option to stay logged in from the Facebook Login page.
Facebook Login Page
Log in to your Facebook account and click the down arrow at the end of the menu bar to display a drop-down menu. Select Log Out to exit your account.
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Click in the Email or Phone field and then press the Down arrow key on your keyboard to display all of your saved email addresses. Hover your cursor over the email address you use to access your Facebook account and then press Delete. This action removes your email address from the Login field until you enter it again.
Clear the Keep Me Logged In check box and then close all open windows to quit the browsing session.
Click the Tools button and then select Internet Options from the drop-down menu to open the Internet Options dialog window.
Click the General tab and then click the Delete button under Browsing History to open the Delete Browsing History box. To automatically delete your browsing history when you complete a browsing session, select the Delete Browsing History on Exit check box.
Select the Form Data check box and then click the Delete button to delete the browser's saved Facebook form information.
Click the Open Menu button and then select History from the list of items on the drop-down menu to open the History sidebar.
Select Clear Recent History in the History section to open the Clear Recent History box.
Select the Time Range to Clear drop-down box and select the option that equals the time range you want to clear, such as Today. Select the Form and Search History check box and then click the Clear Now button.
Click the Customize and Control Google Chrome Menu button and select History to open the History page.
Click the Clear Browsing Data button to open the Clear Browsing Data window.
Click the Obliterate the Following Items From drop-down box and then select the time frame you want the browser to clear, such as The Last Four Weeks. Select the AutoFill Form Data check box and then click the Clear Browsing Data button.