> ## Content Index > Fetch the complete content index at: https://todayfixtech.com/llms.txt > Use this file to discover other available public pages before exploring further. # How to Enable Microsoft Defender for Your Business - URL: https://todayfixtech.com/enable-microsoft-defender-business/ - Published: 2026-09-23T09:01:00.000Z - Updated: 2026-09-23T09:01:00.000Z - Author: Md Sojib Mia - Tags: Microsoft Defender, Cybersecurity, Business Security, Windows Security If you've recently acquired new computers for your business, protecting them from online threats is crucial, [and enabling Microsoft Defender](https://todayfixtech.com/microsoft-365-security-features/) is a simple way to do that. This built-in security feature in Windows 10 and 11 helps safeguard your devices from malware and other dangers. Follow these straightforward steps to activate Microsoft Defender and ensure your systems are protected without needing extensive technical knowledge. ## How do I enable Microsoft Defender on my computer? [To enable Microsoft Defender](https://todayfixtech.com/microsoft-365-updates-features/), follow these steps: 1\. Click on the Start menu and select 'Settings'. 2\. Choose 'Update & Security', then click on 'Windows Security' on the left side of the window. 3\. Click on 'Open Windows Security' to access the Windows Security app. 4\. Select 'Virus & threat protection'. Here, you’ll find the option to turn on real-time protection; toggle the switch to activate it. If prompted, confirm any changes. 5\. Check for updates to ensure Defender uses the latest definitions for threat detection. For Windows 11, the steps are nearly identical: 1\. Go to the Start menu, select 'Settings', then 'Privacy & security', and click on 'Windows Security'. 2\. Follow the same steps to enable Virus & threat protection as outlined above. This will ensure your system is actively monitored for potential threats. ![A close-up view of a hand clicking on the Windows Security option in settings.](https://tse1.mm.bing.net/th?q=close-up%20of%20hand%20clicking%20on%20Windows%20Security%20in%20settings&w=624&h=352&c=7) ## What if I can't find Microsoft Defender? - Ensure you are using Windows 10 or 11, as Defender is part of these versions. If you're using a different or customized version of Windows, Defender may not be available. - Another antivirus program might be installed. Many antivirus applications disable Microsoft Defender to avoid conflicts. Check your installed programs through the Control Panel or Settings. If you find another antivirus, consider uninstalling it to enable Defender. - If you still can’t locate Defender, consider updating your Windows operating system. Outdated software can lead to missing features. To update, go to 'Settings', then 'Update & Security', and click 'Check for updates'. ## Are there settings I should adjust after enabling Defender? - Enable 'Cloud-delivered protection' to allow Defender to use Microsoft’s cloud intelligence for better threat detection. This option is found in the Virus & threat protection settings. - Activate 'Automatic sample submission', which sends samples of suspicious files to Microsoft for analysis, helping improve overall security. Be aware that this may result in some of your data being sent to Microsoft, which is standard for service improvement. - Review the 'Exclusions' section. Here, you can add files or folders that you don’t want Defender to scan. However, excluding files can pose a risk if those files are harmful. ## What if I have another antivirus installed? If you have another antivirus program installed, it’s important to know how it interacts with Microsoft Defender. Windows typically disables Defender when it detects another antivirus to avoid conflicts. If you want to use Defender, you may need to uninstall the other antivirus software. Some users choose to run both programs, but this can lead to conflicts. Ensure that both antivirus programs are not set to perform scans simultaneously, which can slow down your computer. Generally, using one antivirus program is advisable for optimal performance and security. ## How can I tell if Microsoft Defender is working properly? To check if Microsoft Defender is functioning correctly, return to the Windows Security app. In the 'Virus & threat protection' section, look for a message indicating that your device is protected. If there are issues, such as outdated virus definitions or disabled features, Windows will typically alert you. You can also run a quick scan to see if Defender detects any threats. Click on 'Quick scan' in the Virus & threat protection section. If the scan completes without finding any issues, that’s a good sign that Defender is working properly. Additionally, check the 'Security history' for any recent actions taken against potential threats. ![A screenshot showing the virus protection status in the Windows Security app indicating protection is active.](https://tse1.mm.bing.net/th?q=Windows%20Security%20virus%20protection%20status%20displayed&w=624&h=352&c=7) ## Conclusion Enable Microsoft Defender through the Windows Security app by following the outlined steps. After activation, adjust settings like cloud protection and automatic sample submission to enhance security. As long as Defender is active and running scans, your new computers will be well-protected. ## Frequently Asked Questions ### Is Microsoft Defender free? Yes, Microsoft Defender is included with Windows 10 and 11 at no additional cost. ### Can I use Microsoft Defender with other antivirus software? While it's possible to have both, it's not recommended due to potential conflicts. It's usually better to use one antivirus program. ### How often does Microsoft Defender update? Microsoft Defender typically updates automatically. You can also manually check for updates in the Windows Security settings. ### What should I do if Microsoft Defender says my device is not protected? If you see that message, check the Virus & threat protection settings to ensure real-time protection is enabled and no other antivirus programs are interfering. ### Can I schedule scans with Microsoft Defender? Yes, you can schedule scans in the Windows Security app under Virus & threat protection settings.