> ## Content Index > Fetch the complete content index at: https://dailyhassle.com/llms.txt > Use this file to discover other available public pages before exploring further. # How to Run a Virus Scan with Windows Defender on Your PC - URL: https://dailyhassle.com/windows-defender-virus-scan/ - Published: 2026-11-05T13:00:00.000Z - Updated: 2026-11-05T13:00:01.000Z - Author: Arifuzzaman Fahim - Tags: Technology, Windows Defender, Windows If you suspect your Windows PC has a virus, running a scan with Windows Defender is the easiest way to check for malware and remove threats. Windows Defender is built into Windows 10 and 11 and offers several scan options to suit different needs. This guide explains how to open Windows Defender, choose the right scan type, understand scan results, set up automatic scans, and keep Defender updated to protect your computer effectively. ## How do I open Windows Defender and start a virus scan? To open Windows Defender on Windows 10 or 11: 1. Click the Start button and type "Windows Security" in the search box. 2. Select the "Windows Security" app from the results. 3. In the app, click "Virus & threat protection" to access scanning options. To start a scan: - Click "Quick scan" for a fast check of the most vulnerable areas. - To choose a different scan type, click "Scan options" or "Run a new advanced scan" and select Full, Custom, or Offline scan. This lets you decide how deep you want the scan to be depending on your situation. ## What types of virus scans can I run and which should I choose? Windows Defender offers three main scan types: - Quick scan: Checks the most commonly infected areas like running processes and key folders. It usually takes a few minutes and is good for routine checks or if you want a quick status update. - Full scan: Examines all files and running programs on your hard drive. This can take over an hour, depending on your system. Use it if you suspect a serious infection or if the quick scan detects something suspicious. - Custom scan: Lets you select specific folders or drives to scan. Use this if you want to check a particular location, like where you downloaded a file, without scanning the whole system. Choose the scan type based on how thorough you need the check to be and how much time you have. ![A PC screen displaying the different types of Windows Defender virus scans available to choose from.](https://tse1.mm.bing.net/th?q=Windows%20Defender%20virus%20scan%20type%20selection%20screen%20on%20PC%20photo&w=624&h=352&c=7) ## What do the scan results mean and what should I do if threats are detected? After a scan finishes, Windows Defender shows the results on the "Virus & threat protection" page. - If it says your device is clean, no threats were found. - If threats are detected, Defender will list them and usually take action automatically, like quarantining or removing the files. You can review detected threats and choose to remove, quarantine, or allow them if you trust the file. Follow Defender’s recommendations. If you’re unsure about a threat, look up its name online or use additional antivirus tools for a second opinion. After dealing with threats, run another scan to confirm your system is clean. ## How can I set up Windows Defender to scan automatically on a schedule? Windows Defender runs scheduled scans automatically by default, but you can customize the timing by using Task Scheduler: 1. Press Windows key + S, type "Task Scheduler," and open it. 2. Navigate to Task Scheduler Library > Microsoft > Windows > Windows Defender. 3. Find and double-click "Windows Defender Scheduled Scan." 4. Go to the "Triggers" tab and click "New..." to create or modify scan schedules. 5. Choose how often and when scans run automatically. 6. Click OK to save your settings. This lets your PC scan regularly without you needing to start scans manually. ## How do I keep Windows Defender updated and working at its best? Windows Defender depends on up-to-date virus definitions and software updates to detect the latest threats effectively. Windows Update usually handles these updates automatically. To check for updates manually: - Open Windows Security and go to "Virus & threat protection." - Click "Check for updates" under Virus & threat protection updates. Also, keep your Windows system updated by running Windows Update regularly. Avoid disabling Defender or running conflicting antivirus software, as this can reduce protection. Running manual scans occasionally and keeping your software current helps maintain reliable virus protection. ## Conclusion Running a virus scan with Windows Defender is a practical way to check your PC for infections. By knowing how to open the app, select the right scan, understand results, schedule scans, and keep Defender updated, you can keep your computer safe. Regular scans and timely updates reduce the risk of malware causing problems or slowing your system down. ## Frequently Asked Questions ### Can I run a Windows Defender scan while using my PC? Yes, you can use your PC during a Windows Defender scan. However, a full scan may slow down your computer, so it’s best to run it when you’re not doing heavy tasks. ### What should I do if Windows Defender can't remove a detected virus? If Defender can’t remove a threat, it may quarantine the file or suggest manual removal steps. You can also try specialized malware removal tools or get professional help if the infection doesn’t go away. ### Is Windows Defender enough protection for my PC? Windows Defender offers solid basic protection and is enough for many users, especially if you follow safe browsing habits. Some people prefer additional antivirus software for extra features or advanced protection.