Many Windows users at some stage ponder whether they should install antivirus software from external providers alongside the integrated Microsoft Defender in Windows 11, or if any such protection is necessary whatsoever.
A recent Microsoft blog entry explicitly states that for the majority of individuals, Microsoft Defender suffices and no supplementary antivirus is required on Windows 11.
Not unexpectedly, the company describes Windows 11 as its most secure operating system to date, attributing this in part to the antivirus solution embedded from the start, seamlessly woven into the system, and regularly refreshed—specifically, Microsoft Defender.
The entry notes that Microsoft Defender Antivirus delivers appropriate safeguards for typical users: 'It addresses routine threats on Windows 11 without the need for extra applications. Opting for external antivirus hinges on your computing habits and preferred capabilities.'
In essence, sticking with Defender works well provided you maintain the standard safeguards active, ensure timely updates, and exercise care in sourcing downloads from the web. Together, Microsoft Defender Antivirus and SmartScreen shield against harmful downloads and fraudulent websites.
That said, Microsoft acknowledges scenarios where Defender alone might fall short for advanced users, recommending third-party options in those cases. Additional tools could be beneficial for those handling several devices, using shared computers with relatives, or seeking functionalities such as identity theft alerts or child safety features. In business settings, dedicated security solutions are often essential for unified oversight and advanced detection to safeguard confidential information.
Does Microsoft's assessment hold up? Our prior coverage explores whether Windows 11's antivirus meets the needs of average users.
When considering third-party antivirus installation, evaluate the advantages against drawbacks. Such programs introduce extra system demands on memory and processor resources, and certain packages may interfere with Microsoft Defender. Operating dual live scanning tools simultaneously risks system instability. It's best to restrict active protection to just one antivirus solution.
Additional resources: Methods by which Microsoft Defender secures your computer.
This piece first appeared in our affiliate outlet PC-WELT, adapted and translated from its German version.
Hans-Christian Dirscherl started his technology career working with Autoexec.bat and config.sys files, Turbo-Pascal and C languages, as well as Sinix and WordPerfect. For about 25 years, he has contributed articles on diverse IT subjects, ranging from current events to product evaluations and purchase recommendations.