By default, Spotify starts automatically every time you log in to your Windows 10 computer. If you don't want it running in the background and slowing down the startup process, you can disable Spotify's auto-start 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 if it's already running.
In the upper left corner of the Spotify window, click the 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 drop-down box and select “No”.
You can now exit the Settings page. Spotify will not automatically start when you log in.

Disable Spotify startup via Task Manager
If you'd rather not dig into Spotify's settings, you can stop Spotify from automatically starting up through the Windows Task Manager. The Task Manager has a built-in Startup tab that lets you control which programs start up on computer .
To start Task Manager, press Ctrl + Shift + Esc or right-click on the Windows taskbar and select “Task Manager”.

Click the “Startup” tab. If you don’t see it, click “More Details” at the bottom of the window.
Locate “Spotify” in the list. Right-click it and click “Disable.”.
Spotify's auto-start status, as shown in the “Status” column here, will now be “Disabled.” It will no longer start at startup.

Feel free to disable any other autostart programs you want in the same way. Keep in mind that the programs won't be able to complete their tasks in the background if you do this – for example, if you disable Microsoft OneDrive in the Startup tab, it won't automatically sync your files after you sign in until you autostart OneDrive.
