Windows Defender

Windows Defender download for free to PC or mobile

Discover the power of Windows Defender, a robust tool by Microsoft designed to safeguard your computer from malicious software. Formerly known as Microsoft AntiSpyware, Windows Defender scans your system for threats and provides real-time protection to prevent harmful software from being installed. With its user-friendly interface and customizable options, it's easy to schedule scans, configure alerts, and select specific elements for analysis. One standout feature is the Software Explorer, which details the characteristics of running programs, startup items, and network applications. Join a thriving community of users to stay informed about the latest in spyware protection. Enhance your system's security effortlessly with Windows Defender.

06 Jun 2024

Title	Windows Defender
Size	5.0 MB
Price	free of charge
Category	Applications
Developer	Microsoft
System	Windows

5.0 MB

702 reviews

2654

downloads

PEGI Rating

Windows Defender installation

Click on the Download button to start downloading Windows Defender for Windows from Maombi.com

Open the .exe installation file in the Downloads folder and double click it

Follow the instructions in the pop-up window to install Windows Defender on Windows Desktop

Now you can open and run Windows Defender on your PC

Windows Defender Features

Windows Defender is your go-to security solution for protecting your PC against viruses, malware, and other online threats. With real-time protection, automatic updates, and a user-friendly interface, it ensures your device stays safe and secure. Its advanced threat detection capabilities and customizable scan options make it a reliable choice for keeping your personal information and data protected. Say goodbye to worries about cyber attacks with Windows Defender by your side.

Real-time Protection

Windows Defender provides real-time protection against threats like viruses, malware, and spyware to keep your device secure at all times.

Firewall Security

Windows Defender includes a built-in firewall to monitor and control incoming and outgoing network traffic, enhancing your device's security.

Automatic Updates

Windows Defender automatically updates its virus definitions and security features to ensure your device is protected against the latest threats.

Scheduled Scans

You can schedule regular scans with Windows Defender to check for any potential threats and keep your device clean and secure.

Quarantine Management

Windows Defender quarantines suspicious files and allows you to review and take action on them to prevent any harm to your device.

Browser Protection

Windows Defender offers browser protection to block malicious websites and downloads, keeping you safe while browsing the internet.

Windows Defender overview

01

Ensure your device stays secure with this essential application designed to protect against harmful and unwanted software. Regular updates are crucial for detecting the latest threats, keeping your system safe and running smoothly. With real-time protection activated, you can schedule daily scans to maintain optimal security. Stay informed and proactive in safeguarding your digital environment effortlessly.
02

Experience seamless protection with this application designed to keep your system secure. It offers quick scanning capabilities, allowing you to monitor your device efficiently. In just seconds, it examines numerous files, ensuring that potential threats are identified and managed. With a user-friendly interface, you can easily track the status of your scans and maintain optimal performance effortlessly. Stay safe and informed with every use.
03

Protect your device effortlessly with this powerful application designed to keep your system safe from unwanted software. Customize your settings to ensure optimal performance and join a community dedicated to identifying and eliminating spyware threats. Easily manage quarantined items and permitted software, while monitoring all running applications. Stay informed with the latest security updates and tools available online. Your digital safety is just a click away.

Updates and reviews about Windows Defender

22 Nov 2025

Windows Defender Faces Security Challenges with Recent Scam Warnings

New scams exploiting Windows Defender's name raise security concerns, urging users to adopt layered protection to enhance safety.

26 Oct 2025

Built-in Antivirus Solutions Enhance Digital Security

Preinstalled antivirus tools in Windows, macOS, and Ubuntu/Linux provide significant security enhancements against cyber threats. Keep systems updated.

23 Oct 2025

Choose Free Antivirus to Protect Your PC Efficiently

Explore four robust free antivirus options: Windows Defender, Avast, AVG, and Kaspersky offer strong protection with minimal system impact.

21 Oct 2025

Antivirus Survey: 60.5% Prefer Windows Defender

A recent poll shows 60.5% of respondents prefer Windows Defender over third-party antivirus solutions, signaling a shift in security preferences.

13 Oct 2025

Understanding False Positives in Antivirus Detection

False positives in antivirus tools can misclassify safe files as threats. Learn how to identify and manage these errors effectively.

07 Oct 2025

Optimizing Windows Security While Maintaining Performance

Learn how to harden Windows 11's security without compromising gaming performance by using strategies like customizing the firewall, managing user accounts, and enabling secure boot.

23 Apr 2025

Antivirus Challenges: Bypassing Windows Defender Systems

Researchers bypass Windows Defender using XOR encryption and system calls, highlighting traditional antivirus weaknesses. The study underscores the need for Endpoint Detection and Response for better cybersecurity.

23 Apr 2025

Exploring Options for Reliable Free Antivirus Software

Discover reliable free antivirus software options and learn about the differences between free and paid versions to stay protected online. Consider features like advanced threat protection and customer support when choosing the right solution.

01 Apr 2025

WinRing0 Detection Raises Concerns for PC Gamers and Developers

Windows Defender's detection of WinRing0 as a HackTool affects gaming and hardware monitoring, leaving developers seeking solutions.

30 Aug 2024

Optimize Windows Defender for Better Gaming Performance on Windows 11

Microsoft Windows Defender, the default security feature for Windows 11 PCs, can impact gaming performance due to its CPU and disk resource usage. Users can mitigate this by customizing task scheduling to run security tasks only when the computer is idle, potentially reducing slowdowns by 1% to 6%.

All Windows Defender news and updates

Download Windows Defender

Windows Defender reviews

Update: 03 Jan 2026

5
LiamS87
24 Nov 2025

OMG, I’m totally in love with Windows Defender! It’s super easy to use and keeps my laptop protected without me even noticing. I feel like I can finally relax! This is what I’ve been waiting for. A must-have for anyone!

3
JamesO24
23 Nov 2025

Windows Defender works alright, but I sometimes doubt its effectiveness. It’s user-friendly and convenient, but I wish it offered more robust threat detection. I’m not convinced it’s the best choice.

5
EthanR32
20 Nov 2025

Whoa! Windows Defender really surprised me. It’s like having a superhero guarding my computer! The performance is through the roof, and I’m loving the real-time scanning. Can’t go back now! Total win!

3
WilliamR18
20 Nov 2025

I’m on the fence about Windows Defender. It offers basic protection, but I’ve noticed some malware still sneak through. It’s not bad, but I expected more from Microsoft. Might explore other options soon.

4
NatalieK33
18 Sep 2025

Windows Defender has been quite reliable. I like how it runs in the background, but just occasional hiccups with it freezing during scans. I’m still satisfied, though. Really good for a free option!

5
JackB45
16 Sep 2025

Shoutout to Windows Defender for saving my sanity! My computer used to be a wreck, but now it runs so smooth and feels so secure. I can’t express how grateful I am. Wish I knew about this earlier!

5
EmmaW93
01 Sep 2025

Windows Defender is an absolute game changer! I was so tired of all those annoying virus pop-ups, and now they’re gone! Seriously, it makes my PC feel brand new and safe. Can’t believe I waited so long to try it out. Highly recommend it, guys!

5
SophieA76
28 Aug 2025

Just installed Windows Defender yesterday, and wow, I’m impressed! The scanning is quick and totally thorough. Plus, I love how it updates automatically. Definitely made my life easier. 5 stars, all the way!

5
MiaP56
19 Aug 2025

Just a quick shoutout to Windows Defender! It’s been a breeze to use and keeps my system running fast. I don’t think I’ll ever go back to anything else. So grateful for this app!

5
NoahT89
16 Jul 2025

I was skeptical at first, but now I'm a big fan of Windows Defender! It’s fast, effective, and it feels like I have a trusted partner looking out for my data. I don’t worry anymore. So worth it!

3
EllaW91
12 Jul 2025

Windows Defender is okay but not perfect. I like the quick scans, but I’ve had a few false positives that were annoying. Overall, it’s decent, but sometimes I wonder if I should look for something else.

5
OliviaG21
30 Jun 2025

Best antivirus I’ve ever used! Windows Defender is simple yet powerful. I like how it scans in the background while I work. Plus, it feels nice to have that extra security. Can’t get enough of it!

5
AlexF70
24 May 2025

I can’t believe I ever neglected to use Windows Defender! It’s super effective, and I noticed my computer is faster ever since I installed it. Major props for making security so easy! Highly recommend!

4
GraceD12
19 Apr 2025

Pretty happy with Windows Defender! It catches most threats and has a clean interface. I like the notifications, too, but they can be slightly overwhelming at times. Just a tiny bit of tweaking needed, I think.

5
ChloeH62
19 Apr 2025

Windows Defender is legit the best! I’ve had zero issues with viruses since I started using it. It’s reliable, and the interface is super user-friendly. Honestly, I can’t recommend it enough. Total lifesaver!

4
BenC78
08 Apr 2025

Windows Defender is solid! I love the way it integrates with Windows and how it runs updates automatically. It gives me peace of mind, but sometimes I feel like it could be more user-friendly. Overall, pretty great!

3
SarahP57
04 Apr 2025

Had mixed feelings about Windows Defender. It does its job mostly, but I’ve seen it miss a few threats that other software caught. The user experience is nice, but I'm considering switching for peace of mind.

4
MeganJ44
20 Mar 2025

Been using Windows Defender for a while now, and it does the job! I really appreciate the ease of use and the fact that it doesn’t slow down my system too much. I feel a lot safer online. Good stuff!

4
OliverM53
10 Mar 2025

I really enjoy using Windows Defender! Scanning is quick and efficient, and I love that it’s free! My only issue is that it can be a bit resource-heavy during deep scans. But overall, it’s working well for me.

3
IsaacH30
20 Feb 2025

Using Windows Defender has both pros and cons. It’s effective and keeps my computer fast, but sometimes I don’t feel it’s thorough enough with deeper scans. Still, it’s much better than other free options!