Select People from the drop-down menu and then click Remove. Now, in the top-right corner of your Chrome browser, choose People > Remove User.

Go to the Settings app on your computer and open it. Open Accounts, then Family & Other Users. Click Add Someone Else to This PC. ignore the request for an email address, and click I Don’t Have This Person’s Sign-In Info instead.

Go to the Security menu in the left-hand menu. Scroll down until you come across “Your Devices,” and then click Manage Devices. You’ll see a list of the devices that your Google account is signed into. Select your missing device and, under “Account Access,” select Remove.