Why startup applications matter for your device's speed and security
When you turn on your computer or phone, dozens of programs may launch automatically in the background without you asking them to. Each one uses memory and processing power, which is why your device feels sluggish those first few minutes after startup. More importantly, every program that runs automatically is one more thing that could have a security flaw or collect data you did not consent to.
Turning off startup applications you do not need is one of the fastest ways to improve performance. It also reduces your attack surface — the number of entry points a malicious actor could exploit. You do not need to uninstall anything; you are straightforward telling programs to stop launching on their own.
Key Takeaways
- Most programs that slow down startup can be disabled in your system settings without uninstalling them.
- On Windows, the Task Manager Startup tab shows which programs launch automatically and lets you disable them one by one.
- On Mac, System Settings > General > Login Items shows what runs at startup, and you can remove items by selecting them and clicking the minus button.
- Disabling a startup program does not delete it — you can still open it manually whenever you need it.
- Some programs (like antivirus software or system utilities) should stay enabled; disable only programs you rarely use or do not recognize.
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. You will see a list of every program set to launch when Windows starts, along with its impact rating (Low, Medium, or High).
Right-click any program you do not need at startup and select Disable. The program will no longer launch automatically, but it remains installed on your computer. You can still open it manually from your Start menu or desktop whenever you want to use it. Focus first on programs marked High impact — those are the ones slowing you down the most.
Be cautious with programs you do not recognize. If you are unsure what something does, search for its name online before disabling it. Some programs use unfamiliar names but perform important functions (like printer drivers or security software). When in doubt, leave it alone or disable it temporarily and restart your computer to see if anything breaks.
How to disable startup apps on Mac
Click the Apple menu in the top-left corner and select System Settings. Navigate to General, then click Login Items. You will see two sections: Apps and Allowed Behind Login.
Under the Apps section, select any program you do not want to launch at startup and click the minus button below the list. The program will be removed from startup but remains installed. Restart your Mac to confirm the change took effect. Programs in the Allowed Behind Login section are security-related and should generally stay there unless you have a specific reason to remove them.
What to disable and what to leave alone
Safe to disable: cloud storage apps (Dropbox, OneDrive, Google Drive) if you do not need them running constantly, messaging apps, media players, browser extensions that add startup items, and any program you installed but rarely use.
Should stay enabled: antivirus or security software, Windows Defender or macOS security features, printer drivers if you use a printer regularly, and any utility your computer manufacturer installed for hardware management. If your device is a work computer, check with your IT department before disabling anything — some programs may be required by your employer.
If you disable something and your computer stops working the way you expect, you can re-enable it the same way you disabled it. There is no permanent damage from turning off a startup program.
How to find and disable browser extensions that launch at startup
Browser extensions can also add themselves to your startup list. In Chrome, click the three-dot menu, go to Settings, then Extensions. Look for any extension you do not recognize or use regularly. Click Remove to uninstall it. Some extensions will also appear in your system startup list (Task Manager on Windows or Login Items on Mac), so disable them there too.
In Firefox, click the menu button (three horizontal lines), select Add-ons, then Extensions. Disable or remove any extension you do not need. Safari extensions are managed through System Settings on Mac — go to Safari, then Extensions, and uncheck anything you want to disable.
What happens after you disable startup apps
Your computer will restart faster because fewer programs are loading in the background. You may also notice improved performance during the day, especially if you had many high-impact programs launching at startup. Your battery life may improve on laptops because fewer processes are running constantly.
The only downside is that programs you disabled will not be available when ready when you start your computer. If you regularly use a program, it is worth leaving it in startup. If you use it once a week or less, disabling it saves more performance than the minor inconvenience of opening it manually.
Frequently Asked Questions
Will disabling a startup app delete it from my computer?
No. Disabling a startup program only stops it from launching automatically. The program remains fully installed and you can open it manually anytime. To actually remove a program, you would uninstall it through Control Panel (Windows) or Applications folder (Mac).
What if I disable something and my computer stops working right?
Re-enable it using the same method you used to disable it. Open Task Manager or Login Items, find the program, and turn it back on. Restart your computer. If you are unsure which program caused the problem, disable them one at a time and restart between each change so you can identify which one matters.
Should I disable programs I do not recognize?
Search for the program name online first. Many programs use technical names that do not match their function. If you cannot find information about it, leave it alone or disable it temporarily and restart to see if anything breaks. Never disable something just because you do not recognize it.
Can I disable startup apps on my phone?
On Android, go to Settings > Apps, select an app, and look for a Disable or Force Stop option (this varies by phone). On iPhone, you cannot disable startup apps directly, but you can turn off background app refresh in Settings > General > Background App Refresh for individual apps.
How often should I review my startup apps?
Check your startup list when your computer feels slower than usual, or after installing new software. Programs sometimes add themselves to startup without asking. A quick review every few months keeps your startup list clean and your computer running smoothly.