Why apps launch automatically and how to turn them off
When you start your computer, certain programs open on their own without you clicking anything. This happens because those apps are set to launch at startup — a feature many programs enable by default so they are ready when you need them. Some of these are useful: your antivirus software, for example, should run automatically. Others are not: a messaging app, a game launcher, or a photo editor sitting in the background uses memory and slows your boot time for no reason.
Stopping unwanted startup apps is straightforward and takes less than a minute per program. You do not need to uninstall anything or change system settings. You straightforward tell each app not to open when Windows or Mac starts. The change takes effect the next time you restart.
Key Takeaways
- On Windows, open Task Manager, click the Startup tab, right-click any app, and select Disable to stop it from launching at startup.
- On Mac, go to System Settings, click General, then Login Items, and remove apps from the list by clicking the minus button.
- Disabling startup apps does not uninstall them — they remain on your computer and open normally when you click them.
- Removing unnecessary startup apps can noticeably speed up how long your computer takes to fully start and become responsive.
- Some apps like antivirus software should stay enabled at startup for your security.
How to disable startup apps on Windows
Open Task Manager by pressing Ctrl + Shift + Esc, or right-click the taskbar and select Task Manager. Click the Startup tab at the top of the window. You will see a list of all programs set to run when Windows starts, along with their startup impact — listed as Low, Medium, or High based on how much they slow your boot time.
Right-click any app you want to stop, and select Disable. The app will no longer launch when you restart your computer. If you change your mind later, you can right-click it again and select Enable. The list updates when ready, but the change takes effect only after your next restart.
Pay attention to the Impact column. Apps marked High or Medium are the ones slowing your startup the most. Start by disabling those, unless they are security software or programs you use every day. If you are unsure what an app does, search its name online before disabling it — most startup apps are safe to turn off, but a few (like your antivirus) should stay on.
How to disable startup apps on Mac
Click the Apple menu in the top-left corner and select System Settings. Click General in the left sidebar, then scroll down and click Login Items. You will see two sections: Apps and Allowed Behind Login. Apps in the first section open automatically when you log in.
To remove an app from startup, click it once to select it, then click the minus button below the list. The app disappears from the startup list when ready. Like Windows, the change takes effect when you next restart or log out and back in. You can add an app back to startup later by clicking the plus button and selecting it from your Applications folder.
Mac also shows an Allowed Behind Login section. These are apps that can run in the background even when you are not actively using them — a different setting from startup launch. You do not need to change these unless an app is draining your battery or using too much memory.
Which apps are safe to disable
Most programs you installed yourself are safe to disable at startup. This includes web browsers, messaging apps, photo editors, music players, and games. These apps will still open when ready when you click them — disabling startup just means they do not open automatically.
Keep these apps enabled: your antivirus or security software, Windows Defender (on Windows), any VPN you use for privacy, and any software your employer requires you to run. If your computer came with manufacturer software (like Dell SupportAssist or HP Support Assistant), you can usually disable those without problems, though some users prefer to keep them for hardware monitoring.
If you see an app in the startup list and do not recognize its name, search for it online before disabling it. Some apps use obscure names that do not match their purpose. For example, Spotify Web Helper is part of Spotify, and OneDrive is Microsoft's cloud storage. A quick search takes 30 seconds and prevents you from accidentally disabling something important.
How much faster will your computer start
The speed improvement depends on how many apps were launching and how heavy they are. If you disable two or three lightweight programs, you might save a few seconds. If you disable five or more apps, or if you disable something heavy like Slack, Discord, or a game launcher, you could save 10 to 30 seconds on your boot time — a noticeable difference.
The real benefit is not just speed but responsiveness. Even after Windows or Mac finishes loading, it is still busy launching all those background apps. Disabling startup programs means your computer becomes fully usable faster, not just that the boot screen disappears sooner.
If you want to see the exact impact, Task Manager on Windows shows you how much each app slows startup. Apps marked High impact are worth disabling first. On Mac, there is no built-in impact meter, but apps like Activity Monitor can show you which programs use the most memory and CPU after startup.
Re-enabling an app if you need it at startup again
On Windows, open Task Manager, click Startup, right-click the app, and select Enable. On Mac, go to System Settings, General, Login Items, click the plus button, and select the app from your Applications folder. Either way, the change takes effect at your next restart.
Some apps also have their own startup settings. If you open Slack, Discord, Spotify, or similar programs, you can often find a checkbox in their preferences or settings menu that says something like "Launch at startup" or "Start with system". Disabling it there does the same thing as disabling it in Task Manager or Login Items, so you only need to do one or the other.
What to do if you accidentally disabled something important
Nothing breaks. The app is still on your computer and works normally when you click it. straightforward re-enable it in Task Manager or Login Items, and it will launch at startup again after your next restart. You can also just open the app manually whenever you need it — there is no penalty for running it outside of startup.
If you disabled something and your computer behaves strangely afterward (like losing internet, or security warnings appearing), re-enable it and restart. Most problems from disabled startup apps are obvious and reversible in seconds.
Frequently Asked Questions
Does disabling a startup app uninstall it?
No. Disabling a startup app only stops it from launching automatically when your computer starts. The app remains fully installed on your computer and opens normally when you click it. You can re-enable it at any time.
Will disabling startup apps affect my security?
Only if you disable your antivirus or security software. Keep those enabled. Most other apps — browsers, messaging programs, games — have no impact on security whether they launch at startup or not. If you are unsure about a specific app, search its name online or ask your IT support.
Can I disable startup apps without using Task Manager or System Settings?
Some apps have their own startup settings in their preferences menu. Open the app, look for Settings or Preferences, and search for a checkbox labeled "Launch at startup" or "Start with system". Changing it there does the same thing as disabling it in Task Manager or Login Items.
Why do some apps keep re-enabling themselves at startup?
Some programs automatically re-enable their startup setting when they update. If an app keeps launching at startup even after you disable it, check its preferences menu for a startup option and disable it there as well. You may need to do both — the app's own setting and the system setting — to keep it off.
How do I know if an app is slowing down my startup?
On Windows, Task Manager shows an Impact column in the Startup tab — apps marked High or Medium are the biggest culprits. On Mac, there is no built-in impact meter, but you can open Activity Monitor (in Applications > Utilities) and click the CPU or Memory tab to see which programs use the most resources after startup.