By default, Spotify automatically starts every time you sign into your Windows 10 PC. If you don’t want it running in the background and slowing down your boot process, you can disable Spotify’s autostart feature.
Tell Spotify Not to Start Automatically
To find this option, open the Spotify app. You can launch it from the Start menu or double-click the green Spotify icon in your notification area (system tray) if it’s already running.
At the top-left corner of the Spotify window, click menu (…) > Edit > Preferences.
Scroll down to the bottom of the Settings page and click the “Show Advanced Settings” button.’
Look for the “Startup and Window Behavior” option—you may need to scroll up a bit.
To the right of “Open Spotify automatically after you log into the computer,” click the dropdown box and select “No.”
You can now leave the Settings page. Spotify won’t automatically start when you sign in.