Windows Defender Review


Windows Defender Review: Is Windows Defender Any Good?

Windows Defender is Microsoft’s proprietary anti-malware tool that is used in Windows 8.1 and Windows 10 by default. At the time of its creation, it used to be rather cropped and ineffective, which caused an outpouring of criticism. However, it has been seriously improved since then, so in 2019, it has much to be loved for.

As of today, it is a full-featured antivirus product that provides strong malware protection and some useful extras. It is highly estimated by the world’s leading AV testing labs (though Avast free still scores higher). Windows Defender detects and removes almost 100% of cyber threats without a heavy impact on the system performance.

At the same time, the Defender still lacks some important features offered by top antivirus suites. Also, its performance is not completely flawless, especially when it comes to false positives. Finally, Microsoft doesn’t offer dedicated customer support for Windows Defender users.

So, is Windows Defender enough for a regular user? It depends on the user’s type of Internet activity, his expectations, and priorities. Advanced users may want to opt for alternative antivirus products that cover all their needs.

Pros and Cons

It is absolutely free
It comes pre-installed
No impact on the system performance
Effectively protects from viruses and malware
Has some nice extras
Rather easy to use
Free ransomware protection
Scores in the tests are mixed
The number of extra features is limited


  • Provides robust protection from most types of malware
  • Has a built-in firewall
  • Phishing protection for IE and Edge browsers
  • Parental control feature is available
  • Comes pre-installed in Windows OS; protection is enabled by default


Discount Available
Money back Guarantee-
Real-time Antivirus
Manual Virus Scanning
USB Virus Scan
Registry Startup Scan
Auto Virus Scanning
Scheduled scan
Email Protection
Chat/IM Protection
Adware Prevention
Ease of use4/5
Personal Firewall
Parental Control
Game Mode
VPN Service
Smartphone Optimizer
Device Tune-up
Safe browser
Live Help
Phone support
Email support

Best For

  • Beginners in the field of computer usage;
  • Regular users with basic requirements for protection;
  • Those using weak computers, which can’t bear the impact on the system produced by modern antivirus suites.

Reliability and Security

Before we start talking about the features and the capabilities of the software, let’s answer one question, which is of primary importance: is Windows Defender good enough to protect you from viruses and malware? The answer is yes, it is. Windows 10 Defender does a decent job in finding and removing most cyber threats. This is confirmed by the world’s major independent testing labs.

AV-Test, which is one of the world’s best-known laboratories, has repeatedly ranked Windows Defender among top-ten antivirus software suites in terms of reliability. While it is capable of detecting up to 100% of known and zero-day threats, the rate of so-called false positives is slightly higher than average.

Other major labs published less reassuring figures in 2018 and 2019. AV-Comparatives estimate Defender security suite at 98.4 points while mentioning its inconsistent performance and high rate of false positives. Finally, SE Labs gives it just a 96% score, which is quite low if compared to the best AV suites, such as Bitdefender or Kaspersky.

In our tests, Windows Defender successfully detected 100% of known threats and 100% of unknown (newly created) patterns. That said, it “found” 2 fake threats – harmless pieces of software that were marked as suspicious.

Scanning Options

Microsoft Antivirus: Windows Defender Security Center

By default, the real-time protection with Windows Defender is on. It means the security software is constantly doing its work in the background. Its impact on the system is minimal, so in most cases, you simply don’t notice it. As soon as a new threat is detected, you get a notification from Defender.

Besides, you may launch additional scanning manually at any moment if you wish. Just choose a folder or a file you want to scan and right-click it. In the context menu, choose Scan with Windows Defender and select between the Full Scan, Custom Scan, and Offline Scan options in the Windows Defender Security Center.

Additional Features

Though we can’t say that Windows Defender is rich in features, it is still more than just a bare antivirus. It offers some quite usable extras, which are commonly found in premium AV products. In particular, the features of the built-in firewall and parental control are worth mentioning.

The firewall is simple but effective for comprehensive protection of the home network. You can manage its settings right from the Windows Defender Security Center. Choose manually what apps you want to allow or forbid through the firewall.

The anti-phishing feature of Windows Defender works great for the “native” browsers of Microsoft – Internet Explorer and Edge. The trouble is that most of us actively use alternative browsers, such as Google Chrome, Firefox, etc. In this case, it is necessary to install the Defender’s plug-in separately.

Also, Windows Defender offers the feature of ransomware protection. Frankly speaking, it is a sort of basic, but it works. To protect important files from blocking and subsequent elimination by scammers, you may safely store their copies in the One Drive cloud.

The feature of parental control in Windows Defender is absolutely marvelous, especially taking into account the fact that it is free. You can create separate accounts for all family members and control them from the “main” (admin) account. Moreover, it is possible to set various parameters and limits for different accounts. For example, you can protect children from undesired content by setting limitations in the Edge browser and blocking access to alternative browsers.

Windows Defender Review - Is Windows Defender Good?

Windows Defender Performance

Previously in our Windows Defender review, we mentioned that this software has minimal impact on the system performance. It is an integral part of Windows 8 and Windows 10 OS, so it runs as seamlessly as other basic system components. It doesn’t slow down a computer; in most cases, its background scanning is absolutely unnoticeable.

Ease of Use

Usability is an important characteristic of any software product. When it comes to using Windows Defender, its interface is pretty simple for everyone who has ever dealt with native Microsoft products. But even inexperienced users have nothing to worry about, as Windows Defender comes pre-installed, and its basic features are enabled by default.

However, it doesn’t mean you can’t configure Windows Defender according to your needs. Advanced users can easily set the desired settings with a couple of clicks. To adjust the settings, open the Windows Defender Security Center, which can be found in the Update & Security section of the Settings menu.

Customer Support

Microsoft community is one of the largest in the world. The company offers numerous detailed FAQs and forums where you can find answers to most questions. Besides, you can get in touch with tech specialists directly via several channels: online chat, e-mail or by phone. However, there is no dedicated support for Windows Defender; instead, the support service covers all the Microsoft products.

On the plus side, you can find tons of useful information without the need of contacting customer support. On the minus side, if you need to consult a tech specialist directly, it will take you longer than you can expect because of the lack of a dedicated support line.

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