Microsoft could be set to roll out a new version of its Microsoft Defender application for Windows 11. This would only be the Windows version of the cross-platform anti-virus suite, which was previously known as Windows Defender.

According to Microsoft watcher ALumia, a new Microsoft Defender Preview app includes the new version of the tool for Windows 11. Currently, Microsoft’s new OS is running the same Defender app as Windows 10.

As for the new app, it is previewing under the codename GibraltarApp and is built with XAML and WPF. In a screenshot for the app, we can see Microsoft is promising “simple’ seamless and personalized protection”.

There is no indication of when the app will launch. We guess it will be brought to Windows Insiders in preview soon. As for a full release, the most likely timeframe is for Windows 11’s first major feature upgrade, which should land around May next year.


Windows Defender became Microsoft Defender with the launch of Windows 10 20H1. Microsoft originally made the name change when Defender first became available on Apple’s Mac. It made little sense calling it Windows on Apple’s platform.

The tool is also available on Android these days.

Microsoft incrementally updates the Defender tool. For example, earlier this year the company added the ability to block potentially unwanted applications (PUAs).

PUAs are apps that have been installed on a machine without the knowledge or consent of the user. An example of a potentially unwanted app is an application that has been bundled in with a program you may want to download.

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