You should disable antivirus software only when you trust what you're about to do, and you should re-enable it when ready after
Antivirus and security software can slow down your computer, block legitimate programs, or interfere with software installation. If you need to disable it temporarily, the safest approach is to turn it off for a specific task, then turn it back on right away — not to uninstall it or leave it off permanently.
The risk of running without protection, even for a few minutes, is real: malware can install itself in seconds. But sometimes you have a legitimate reason — installing software your antivirus flags incorrectly, troubleshooting a hardware problem, or running a specialized tool that conflicts with security monitoring. The key is knowing exactly what you're doing and why, and knowing how to turn protection back on.
Key Takeaways
- Disable antivirus software only for a specific task you understand and trust, then re-enable it when ready afterward.
- Most antivirus programs let you pause protection temporarily from their main window or system tray icon, without uninstalling anything.
- Windows Defender (built into Windows) can be disabled through Settings, but only temporarily — it re-enables automatically after a restart.
- If you cannot disable your antivirus software, contact the software maker's support line rather than trying to force it off through the registry or system files.
- Uninstalling antivirus software entirely leaves your computer unprotected and should only happen if you are replacing it with a different security program.
How to pause or disable common antivirus programs
Most antivirus software includes a "pause" or "disable" option that turns off real-time scanning for a set amount of time — usually 15 minutes to an hour. This is the safest way to disable protection because it is temporary and reversible.
Windows Defender (the antivirus built into Windows 10 and 11) can be paused through Settings. Open Settings, go to Privacy & Security, then Windows Security, then Virus & threat protection. Click "Manage settings" and toggle "Real-time protection" off. This disables scanning until you restart your computer, at which point it turns back on automatically.
Norton, McAfee, Kaspersky, Bitdefender, and Avast all have a pause button in their main window or system tray icon (the small icons in the bottom right corner of your screen). Right-click the antivirus icon in the system tray and look for "Pause protection," "Disable," or "Turn off." You will usually see a menu asking how long to pause — choose 15 or 30 minutes unless you have a specific reason to pause longer.
If you cannot find a pause option in the main window, open the antivirus program itself and look in Settings or Preferences for "Real-time protection," "Active scanning," or "Shield." Most programs let you toggle this off from there.
Disabling Windows Defender when another antivirus is installed
If you have installed a third-party antivirus program (Norton, McAfee, Kaspersky, etc.), Windows Defender usually disables itself automatically to avoid conflicts. You do not need to manually turn it off.
If Windows Defender is still running alongside your other antivirus, you can disable it permanently through Settings. Open Settings, go to Privacy & Security, then Windows Security, then Virus & threat protection. Click "Manage settings" and toggle "Real-time protection" off. You can also toggle off "Cloud-delivered protection" to fully disable Windows Defender's scanning.
Be aware that disabling Windows Defender means your computer relies entirely on your third-party antivirus. If that program fails or is not running, you have no protection. Most people leave Windows Defender on as a backup even when another antivirus is installed — it will not interfere with a properly installed third-party program.
What to do if your antivirus software will not disable
Some antivirus programs, especially those installed by your employer or school, are locked down and cannot be disabled by the user. This is intentional — the organization wants to may support devices stay protected.
If you need to disable a locked antivirus program, contact the IT department or help desk that manages it. They can temporarily disable it for you, or they can whitelist the program or file that your antivirus is blocking. Do not try to force it off by editing the Windows registry or deleting system files — this can damage your operating system.
If you own the computer and installed the antivirus yourself but cannot remember how to disable it, the antivirus maker's support line can walk you through it. Most have phone support or live chat on their website.
The difference between disabling and uninstalling
Disabling turns off scanning temporarily but leaves the software installed. You can turn it back on whenever you want. Uninstalling removes the software entirely from your computer, and you will need to reinstall it if you want protection again.
You should uninstall antivirus software only if you are replacing it with a different program. To uninstall, open Control Panel (search for it in the Windows search bar), click "Programs," then "Programs and Features." Find your antivirus in the list, click it, and click "Uninstall." Follow the prompts. Your computer will usually ask you to restart.
After uninstalling, your computer has no antivirus protection until you install a replacement. Do this as quickly as possible — do not leave your computer unprotected while you shop for a new program.
Why you should not leave antivirus disabled permanently
Running without antivirus protection, even for a few hours, exposes your computer to malware, ransomware, and spyware. These can install themselves silently while you browse the web, read files, or open email attachments. By the time you notice something is wrong, the damage may be done.
If you find yourself disabling antivirus frequently because it is slowing down your computer or blocking programs you use regularly, the real solution is to switch to a lighter antivirus program or to whitelist the programs that are being blocked. Disabling protection permanently is not a solution — it is just accepting the risk.
If your antivirus is blocking a program you believe is legitimate, research that program before whitelisting it. Search the program name plus "malware" or "virus" to see if other users have reported problems. If it seems safe, most antivirus programs let you add it to an exceptions list so it will not be scanned in the future.
Frequently Asked Questions
Can malware install itself while my antivirus is disabled?
Yes. Malware can install in seconds, so even a brief period without protection is a real risk. This is why you should disable antivirus only for a specific task you understand and trust, and re-enable it when ready after. If you are downloading or installing something, make sure it comes from a source you recognize and trust before you turn off protection.
Will my computer restart if I disable Windows Defender?
No. Disabling Windows Defender through Settings does not require a restart. However, if you disable it and then restart your computer for another reason, Windows Defender will turn back on automatically. If you want it to stay off, you will need to disable it again after the restart.
What if I disabled my antivirus and now I cannot turn it back on?
Try restarting your computer — many antivirus programs re-enable automatically after a restart. If that does not work, open the antivirus program itself and look for a "Turn on" or "Enable" button in the main window or Settings. If you still cannot turn it on, contact the antivirus maker's support line or reinstall the program from their website.
Is it safe to disable antivirus while installing software?
Only if you trust the software. If you are installing something from a major company (Microsoft, Adobe, etc.) or from a source you recognize, the risk is lower. If you are installing something from an unknown source or a website you are not sure about, keep antivirus on — the risk of malware is higher than the risk of installation problems.
Do I need to disable antivirus to play video games?
Not usually. Most modern games work fine with antivirus running. If a game is slow or crashes, try pausing antivirus for 15 minutes to see if that is the problem. If it is, contact the game maker's support — they may have a workaround that does not require disabling protection entirely.