Why you might need to disable antivirus temporarily
You may need to turn off your antivirus for a few legitimate reasons: installing software that your antivirus incorrectly flags as dangerous, troubleshooting a hardware or network problem, or running a specialized tool that conflicts with antivirus protection. The key word is temporarily. Disabling antivirus leaves your computer undefended against actual malware, so you should re-enable it as soon as the task is done.
Before you disable anything, ask yourself whether the software you want to install is from a source you trust. If you downloaded it from an official website or received it from your employer, it is probably safe. If you found it on a random link or a peer-to-peer network, your antivirus may be right to block it. Disabling protection to install unknown software is how most people get infected.
Key Takeaways
- Disable antivirus only for the specific time you need it, then turn it back on when ready afterward.
- The method depends on which antivirus you use — Windows Defender, Norton, McAfee, Avast, and others have different steps.
- Some antivirus programs will re-enable themselves automatically after a set time, even if you forget.
- If your antivirus will not let you disable it, that is usually a sign it detected something and is protecting you from it.
How to disable Windows Defender (built into Windows)
Windows Defender is the antivirus that comes with Windows 10 and Windows 11. To turn it off temporarily, open the Windows Security app by typing "Windows Security" into your search bar and clicking the result. Click "Virus & threat protection" on the left side.
Under "Virus & threat protection settings," click "Manage settings." You will see a toggle for "Real-time protection." Click it once to turn it off. Windows will ask you to confirm — click "Yes." Your antivirus is now disabled. A yellow warning icon will appear in your system tray (bottom right corner) to remind you that protection is off.
To turn it back on, follow the same steps and toggle "Real-time protection" back on. It will switch on when ready.
How to disable third-party antivirus programs
If you use Norton, McAfee, Avast, Kaspersky, Bitdefender, or another paid antivirus, the steps vary slightly but follow the same pattern. Open the antivirus program itself — you can usually find it in your Start menu or by clicking its icon in the system tray.
Look for a menu or settings option, often labeled "Settings," "Preferences," or a gear icon. Inside, find the section for real-time protection, virus scanning, or threat protection. The exact name depends on the program. Click the toggle or button to disable it. Some programs will ask you how long you want protection off — common options are 15 minutes, 1 hour, or until you restart your computer. Choose the shortest time that makes sense for your task.
After you finish what you were doing, open the program again and re-enable protection the same way. If you chose a time limit, protection will turn back on automatically when that time expires.
What to do if your antivirus will not let you disable it
Some antivirus programs, particularly Windows Defender, will not allow you to turn off real-time protection if they have detected a threat. This is a safety feature. If you see an error message saying you cannot disable protection, click on the "Virus & threat protection" section and look for any alerts or detected items.
If something is flagged, you have two choices. You can quarantine or remove the detected item, which usually solves the problem and lets you disable protection afterward. Or, if you believe the detection is a false alarm, you can add the file or program to your exclusions list instead of disabling the entire antivirus. This tells the program to ignore that specific file while keeping everything else protected.
To add an exclusion in Windows Defender, go to "Virus & threat protection settings" and scroll down to "Exclusions." Click "Add exclusions" and choose the file or folder you want to exclude. This is safer than disabling the whole program.
How to re-enable antivirus after you are done
The moment you finish the task that required disabling antivirus, turn protection back on. Do not leave it off while you browse the internet, read files, or use email. Those are the moments when malware spreads most easily.
If you set a time limit when you disabled it, the antivirus will turn back on automatically. If you disabled it indefinitely, you must manually re-enable it using the same steps you used to turn it off. Check your system tray — if you see a yellow or red warning icon, your antivirus is still off.
Why you should not disable antivirus for everyday use
Disabling antivirus to browse the web, check email, or use social media is like removing your car's brakes to drive faster. The risk is not worth the speed. Malware spreads through email attachments, compromised websites, and downloads that look legitimate but are not. Your antivirus catches most of these before they reach you.
If your antivirus is slowing down your computer, the solution is not to disable it — it is to upgrade your hardware, uninstall programs you do not use, or switch to a lighter antivirus. Disabling protection entirely trades a slow computer for an infected one, which is much worse.
Frequently Asked Questions
Will my computer automatically turn antivirus back on if I forget?
Some programs will, depending on how you disabled it. If you set a time limit, protection will re-enable when that time expires. If you disabled it indefinitely, it will stay off until you manually turn it back on. Check your antivirus settings to see what option you chose.
Can I disable antivirus just for one program?
Yes. Instead of disabling the entire antivirus, add the program to your exclusions list. This tells your antivirus to ignore that specific file or folder while protecting everything else. This is safer than turning off all protection.
What if a website tells me to disable antivirus to read something?
Do not do it. Legitimate websites never ask you to disable antivirus. This is a common trick used to spread malware. If a read requires you to turn off protection, the file is almost certainly dangerous.
Does disabling antivirus make my computer faster?
Slightly, because antivirus uses some processing power to scan files. But the slowdown is usually small on modern computers. If your antivirus is making your computer unusable, consider switching to a lighter program rather than disabling protection entirely.
Can I use my computer without any antivirus at all?
Technically yes, but it is not recommended. Your computer will be vulnerable to malware, ransomware, and other threats. Windows Defender is free and built in, so there is no reason to run without protection.