You’ll have to log in with your Instagram account credentials if you aren’t already logged in.

If you’re on a computer, you’ll find this icon in the top right corner of the screen.

On Android, this menu is vertical rather than horizontal.

Your blocked user will still be able to see your comments on other users’ photos, and they will still be able to search for your account; however, they won’t be able to access your account. You can view a list of your blocked users at any time by going into your settings menu and selecting the “Blocked Users” tab.

Changing your account to “Private” also restricts user access to your comments and likes, with the sole exception being for public posts (wherein your name will appear next to other “likes”, but your account will still be protected). You won’t be able to change your account’s viewing status from a computer.

You can also do this on a tablet.

If you want to disable this setting, simply swipe the switch back and tap “OK” on the pop-up window. Note that your current followers will not be affected by this switch. If you want to block some or all of them, you’ll need to do so manually.