Can You Run Antivirus in Safe Mode?

Everyone · Explainer · Updated October 1, 2026 · LearnLife Editorial

What Is Safe Mode and Why Is It Useful for Running Antivirus?

Safe Mode is a special startup option for Windows and Mac computers that loads only the minimal set of system drivers and software needed to operate. This means unnecessary programs, including many malware components, do not start automatically. Because malware often depends on running in the normal system environment, Safe Mode prevents many infections from activating or hiding, giving antivirus software a better chance to detect and remove them.

For example, if a virus launches with your computer and blocks antivirus programs from working properly, booting into Safe Mode disables that virus temporarily. This allows your antivirus software to run unhindered and scan files that the virus would normally protect. Safe Mode also disables many startup programs and services, which reduces the risk of other software interfering with your antivirus scan.

Safe Mode is not meant for everyday use but is a troubleshooting tool designed to help fix problems like malware infections, driver conflicts, or software crashes. Using it for antivirus scans is especially helpful when infections prevent normal antivirus operation.

How Does Running Antivirus in Safe Mode Work?

When you start your device in Safe Mode, the operating system loads only the core system files and drivers, skipping many third-party applications and services. This environment limits what malware can do, as most malicious software relies on loading during normal startup to protect itself or disrupt antivirus software.

Once in Safe Mode, you can open your antivirus program just like usual and run a scan. Because malware is less active, the antivirus can access and analyze files that may be locked or hidden during normal use. For example, if you suspect a rootkit that hides itself deeply in system files, Safe Mode can prevent it from loading and allow your antivirus to detect it.

If your antivirus does not launch automatically in Safe Mode, you can manually open it by clicking its icon or searching for it in the Start menu (Windows) or Applications folder (Mac). Run a full system scan rather than a quick scan to thoroughly check all files and system areas.

Keep in mind that Safe Mode disables most network connections by default, so your antivirus might not update its virus definitions unless you use Safe Mode with Networking. Updated definitions are crucial for detecting the latest threats.

Why Should You Run Antivirus in Safe Mode?

Running antivirus in Safe Mode matters especially if your computer shows signs of infection that normal scans cannot fix. Typical infection symptoms include slow performance, unexpected crashes, pop-ups, redirected web searches, or strange error messages.

If your antivirus software cannot complete scans or keeps getting blocked, booting into Safe Mode disables interfering malware temporarily, allowing the antivirus to function properly. This can help remove persistent infections that survive normal scans.

For example, imagine your computer shows a pop-up claiming you have a virus and urging you to call a number or install software. Running antivirus in Safe Mode can help remove this scareware, which often prevents antivirus programs from running normally.

Additionally, Safe Mode is helpful when malware disables system tools or security settings. By limiting running programs, Safe Mode restores control to you and your antivirus.

After cleaning the infection in Safe Mode, restarting normally should result in improved system performance and stability. If problems persist, further steps may be needed.

What Are Common Terms Confused with Running Antivirus in Safe Mode?

Several terms related to Safe Mode and malware removal often get mixed up:

• Safe Mode with Networking: This is Safe Mode but with internet access enabled. It allows downloading antivirus updates or additional tools. However, the internet connection can also expose the computer to network threats, so only use it if necessary.

• System Restore: This feature rolls back system files and settings to an earlier point but doesn’t scan or remove malware directly. It can sometimes undo malware changes but won’t replace antivirus cleaning.

• Bootable Antivirus Rescue Disk: This is a separate USB or CD that boots your computer outside the normal operating system, running antivirus scans independently. It’s useful if Safe Mode scans fail or malware blocks Safe Mode access.

• Malware Removal Tools vs. Antivirus: Antivirus programs provide broad protection and scanning, while malware removal tools target specific infections or deeply embedded threats. Both can be used in Safe Mode for better results.

Understanding these terms helps you choose the right approach for malware problems.

How to Enter Safe Mode on Windows and Mac to Run Antivirus?

Entering Safe Mode on Windows 10 or 11:

1. Click the Start menu, then select Power.
2. Hold the Shift key and click Restart. This opens the recovery menu.
3. Choose Troubleshoot, then Advanced Options.
4. Select Startup Settings, then click Restart.
5. After your PC restarts, press 4 or F4 to enter Safe Mode without networking.
6. Once in Safe Mode, open your antivirus software and run a full scan.

If you need internet access to update your antivirus, choose option 5 or F5 to enter Safe Mode with Networking.

Entering Safe Mode on Mac (Intel-based):

1. Shut down your Mac completely.
2. Press the power button, then immediately hold down the Shift key.
3. Release the key when the login window appears.
4. Log in (you may need to log in twice).
5. Run your antivirus or malware scanner.

For Macs with Apple Silicon (M1 chip or newer):

1. Shut down your Mac.
2. Press and hold the power button until options appear.
3. Click Options, then Continue.
4. Log in, then hold Shift and select Safe Mode from the options.
5. Run antivirus scans as needed.

What Steps Should You Take After Running Antivirus in Safe Mode?

After completing a scan and removing detected threats in Safe Mode, restart your computer normally. Observe if symptoms have improved. Here are recommended next steps:

1. Run a follow-up antivirus scan in normal mode: Some malware may reactivate or additional infections can be found.
2. Update your antivirus software: Ensure virus definitions are current to protect against new threats.
3. Install system and software updates: Keeping your operating system and applications updated closes security holes malware exploits.
4. Change passwords: If malware captured sensitive data, update passwords on important accounts.
5. Back up important files: Use an external drive or cloud service to protect your data from future infections or hardware failures.
6. Consider additional malware removal tools: If problems persist, free or paid specialized tools can target specific threats.
7. Seek professional help: If you cannot remove malware or your system remains unstable, a technician can assist.

Routine maintenance like regular antivirus scans and cautious internet habits reduce infection risk. For detailed antivirus use, see how to run antivirus on a laptop or how to run an antivirus scan.

Frequently asked questions

Can I run antivirus in Safe Mode on any device?

Safe Mode exists primarily on Windows and Mac computers. Mobile devices like smartphones don’t have Safe Mode for antivirus but use other security measures instead.

How do I know if my antivirus worked after scanning in Safe Mode?

After running a full scan and removing threats, check your antivirus software’s scan report. Also, observe if computer problems improve. Additional scans can confirm if the infection is gone.

Why does my antivirus need internet in Safe Mode sometimes?

Antivirus software needs internet to download the latest virus definitions, which are essential for detecting new malware. Use Safe Mode with Networking if you need to update antivirus software.

Can malware prevent Safe Mode from starting?

Some advanced malware may try to block Safe Mode, but this is rare. If Safe Mode won’t start, using a bootable antivirus rescue disk or professional help is recommended.

Is Safe Mode a permanent solution to malware infection?

No, Safe Mode is a troubleshooting step. It helps remove malware but does not prevent future infections. Ongoing protection and safe habits are necessary.