If you’d rather your login screen not be blurred, you can do that too! I recommend first following the steps above, so that there is an image in the /Library/Caches folder. Use An Unblurred Picture For Your Login Screen It’s working! Note that, if you have a rotating wallpaper, this change will not affect your lock screen, which will always show a version of your current wallpaper (on Desktop 1.) The login screen, however, is now set as a blurred version of your preferred image. Now log out of your account or restart your Mac to see your new login screen. Once you see your image, go ahead and turn your rotating wallpaper back on, if you wish-in our tests this did not affect this file.

Sometimes this will take a minute, so be patient. In this folder, you should see an image here named “.png,” and if your changes took hold this image will be a blurred version of whatever you set as your wallpaper. Open the finder, then choose Go > Go To Folder. If you want to switch back to the rotating folder you had before, you can do that, but first let’s make sure that macOS has set your new image as the background for your login screen. Now change your wallpaper to whatever you’d like your login screen’s background to be.

Mac sierra change password for computer