Why you might need to disable antivirus, and what happens when you do

You may need to turn off your antivirus temporarily when installing software that the program blocks by mistake, when troubleshooting a connection problem, or when a legitimate program keeps getting flagged as dangerous. When antivirus is off, your computer stops scanning files in real time and no longer blocks suspicious activity — so malware, if present, can run freely. This is why you should only disable it for the specific task you need to complete, then turn it back on immediately.

The steps differ depending on which antivirus program you have. Windows Defender (built into Windows), Norton, McAfee, Kaspersky, Avast, and AVG all have different menus and different ways to pause protection. Some let you disable it for 15 minutes; others require you to turn it off completely until you restart the computer.

Key Takeaways

  • Disabling antivirus leaves your computer unprotected, so only turn it off for the specific task you need to complete, then turn it back on immediately.
  • Windows Defender is disabled through Settings > Update & Security > Windows Security > Virus & threat protection, not through the antivirus window itself.
  • Third-party antivirus programs like Norton and McAfee usually have a "Pause protection" or "Disable" option in the main program window or system tray icon.
  • Some antivirus programs will re-enable automatically after a set time or after you restart your computer, while others stay off until you manually turn them back on.
  • If you cannot find the disable option, restarting your computer in Safe Mode with Networking will prevent most antivirus from running while still letting you access the internet.

How to disable Windows Defender on Windows 10 or 11

Windows Defender is the antivirus built into Windows and runs automatically. To turn it off temporarily, open Settings by pressing the Windows key and typing "Settings", then select the Settings app. Go to Update & Security (Windows 10) or Privacy & Security (Windows 11), then select Windows Security on the left side.

Click Virus & threat protection, then click Manage settings under "Virus & threat protection settings". You will see a toggle for Real-time protection — click it to turn it off. Windows will ask you to confirm; select Yes. Real-time protection will stay off until you restart your computer or manually turn it back on by clicking the same toggle again.

If you do not see the toggle or cannot access these settings, your computer may be managed by your workplace or school. Contact your IT department before attempting to disable antivirus, as doing so without permission may violate your organization's policies.

How to disable Norton, McAfee, Kaspersky, Avast, or AVG

Third-party antivirus programs usually have a pause or disable option in the main window. Open your antivirus program by clicking its icon in the system tray (the small icons on the right side of your taskbar) or by searching for it in the Start menu. Look for a button or menu option labeled Pause, Disable, Turn off, or Pause protection.

If you see a pause option, click it and select how long you want protection paused — usually 15 minutes, 1 hour, or until the next restart. If you only see a full disable option, click it and confirm. After you finish your task, return to the antivirus program and click the same button again to turn protection back on. Some programs will automatically re-enable after a set time or when you restart; others will stay off until you manually turn them back on.

If you cannot locate the pause or disable button in the main window, right-click the antivirus icon in the system tray and look for these options in the menu that appears. If the icon is not visible, click the arrow on the left side of the system tray to show hidden icons.

What to do if you cannot find the disable option

Some antivirus programs hide the disable option to prevent accidental or malicious shutdown. If you have searched the main window and the system tray menu and still cannot find it, restart your computer in Safe Mode with Networking. This boots Windows with only essential programs running, which prevents most antivirus from loading while still letting you connect to the internet.

To enter Safe Mode on Windows 10 or 11, restart your computer and immediately press F8 or Shift + F8 repeatedly as it boots (before the Windows logo appears). Select Safe Mode with Networking from the menu. Once in Safe Mode, your antivirus will not be running. Complete your task, then restart your computer normally to exit Safe Mode and restore antivirus protection.

If F8 does not work, try this alternative: hold Shift and click the restart button in the Start menu's power options. Your computer will boot into the recovery environment; select Troubleshoot, then Advanced options, then Startup Settings, then Restart. When the menu appears, press 5 to select Safe Mode with Networking.

How to turn antivirus back on after you are done

After you finish the task that required antivirus to be off, turn protection back on immediately. If you paused protection in your antivirus program, the program will usually resume automatically after the time you selected expires. If you disabled it completely, open the antivirus program again and click the same button you used to turn it off — it will now say Enable, Turn on, or Resume.

For Windows Defender, go back to Settings > Update & Security > Windows Security > Virus & threat protection > Manage settings and click the Real-time protection toggle to turn it back on. If you used Safe Mode, simply restart your computer normally and your antivirus will load automatically.

Check that protection is actually running before you leave your computer unattended. In Windows Defender, the Windows Security window should show a green checkmark next to "Virus & threat protection". In third-party programs, the main window or system tray icon should show a green status indicator or say "Protected".

Why antivirus might block something you need

Antivirus programs flag files based on their code, behavior, or reputation. A legitimate program might be flagged if it is very new, if it is not widely used, if it performs actions that resemble malware (like modifying system files), or if it comes from a source the antivirus does not recognize. Game launchers, system utilities, and older software are common false positives.

Before disabling antivirus to install something, verify that the program is actually legitimate. Check the publisher's official website, read reviews from trusted sources, and confirm that other users have installed it successfully. If you are certain the program is safe, you can disable antivirus just long enough to install it, then turn protection back on immediately.

Antivirus keeps re-enabling itself — what to do

Some antivirus programs, especially Windows Defender, are designed to turn themselves back on automatically after a period of time or after detecting suspicious activity. This is a safety feature to prevent your computer from staying unprotected by accident. If antivirus keeps re-enabling when you need it off, check whether your program has a setting to keep it paused longer.

In Windows Defender, you cannot pause it for more than a few minutes through the Settings menu. If you need it off longer, you may need to uninstall it temporarily (though this is not recommended) or use Safe Mode instead. For third-party programs, open the settings or preferences menu and look for an option to extend the pause duration or to disable automatic re-enabling.

Frequently Asked Questions

Is it safe to disable antivirus while browsing the internet?

No. Disabling antivirus while browsing leaves you vulnerable to malware from infected websites, malicious ads, and phishing links. Only disable antivirus for the specific offline task you need to complete, then turn it back on before you go online.

Will disabling antivirus slow down my computer?

Antivirus does use some processing power, so your computer may run slightly faster with it off. However, the difference is usually small on modern computers. If your computer feels slow, the problem is more likely a lack of storage space, too many programs running at startup, or a failing hard drive.

What if I restart my computer and antivirus does not turn back on?

Go back to Settings (Windows Defender) or open your antivirus program and manually turn protection back on. If it still will not turn on, your antivirus may be corrupted or conflicting with another program. Restart your computer again, or uninstall and reinstall the antivirus program.

Can I disable antivirus on a work or school computer?

Probably not without permission. Work and school computers are often managed by IT departments that lock down security settings. Attempting to disable antivirus may trigger alerts or violate your acceptable use agreement. Contact your IT department first.

Do I need to disable antivirus to install a new program?

Usually not. Most legitimate programs install fine with antivirus running. Only disable antivirus if the installer is blocked and you have confirmed the program is safe from the publisher's official website.