Windows Defender vs. Avast – Which one should you download for your Windows 10?

Windows defender vs Avast Antivirus

Should you choose Windows Defender over Avast Free Antivirus? Both are free. One is developed by Microsoft and built-in within Windows. The other one is developed by leading security company – Avast. Let’s compare them together.

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Detection rates

[su_note note_color=”#17f115″]Winner: Avast Free Antivirus[/su_note]

The most important factor of any computer protection is detection rate. If your antivirus doesn’t detect malware in files, you might get your PC infected. The lower missed samples can antivirus achieve, the better protection it provides. If we compare Windows Defender vs Avast Free Antivirus detection rate, Avast Free Antivirus is obvious winner. According independent testing organization AV-comparatives Avast missed only 0.1% of all samples, which is one of the best result among all antivirus developers. Windows Defender on the other side end up worst with 1% of missed samples.

Windows Defender vs Avast Free Antiivrus
Missed samples of Avast and Windows Defender

Source: Anti-Virus Comparative – File detection test (September 2016)


Additional Features

[su_note note_color=”#17f115″]Winner: Avast Free Antivirus[/su_note]

Antivirus programs usually offer lot of additional features to protect user against online threats. The core function will be always scanning and protection against malware. In this section we will have a look at additional features which Windows Defender and Avast Free Antivirus offers on Windows 10. 


 Avast Free Antivirus 2016

 Windows Defender

Antivirus & Anti-malware (Core function)



Mail protection



Web-traffic scanning



Browser cleanup



Password manager

Yes No

Secure browser



Silent mode



Clear winner in this category is also Avast Free Antivirus 2016 for Windows 10. Windows Defender doesn’t offer any features which would support core function of antivirus software. Avast Free Antivirus on the other side offers a lot of free features to enhance protection of user’s Windows 10 PC.

User interface

[su_note note_color=”#17f115″]Winner: Avast Free Antivirus[/su_note]

If you compare user interface of Avast and Windows Defender, Avast offers an easier navigation and more organized interface compare to Defender. Users have a chance to access smart scan (feature of Avast Free Antivirus) directly from main window. On Windows Defender you can launch full-scan directly from main screen as well.

You will probably have no problems to navigate in user interface of both antivirus programs however Avast Free Antivirus offers much cleaner and organized look. Compare it yourself.



[su_note note_color=”#17f115″]Winner: Windows Defender[/su_note]

Windows defender is free of any advertising as it is antivirus built-in into your Windows 10 operating system. As Avast is a 3rd party software, it is using advertising to convince you to upgrade to higher protection level. This can be obtrusive for some users however this is standard among most of the 3rd party antivirus vendors.

Summary of battle Windows Defender vs. Avast Free Antivirus

Overall winner of this battle is definitely Avast Free Antivirus which offers better detection rates, more features and cleaner user interface compare to Windows Defender. If you don’t mind advertising integrated into Avast, it is a definite choice against Windows Defender.

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