Microsoft Edge may prevent users from downloading Mozilla Firefox.

Microsoft Defender SmartScreen is a technology built into the Microsoft Edge browser that analyzes unknown files downloaded from the internet and determines whether they are safe to run on a user's computer. While Microsoft's scanning tool is generally very effective at detecting internet threats, it can sometimes inadvertently identify safe programs as dangerous – such as Mozilla's Firefox browser.

Microsoft Edge may prevent users from downloading Firefox.

According to several user posts on Reddit, the Firefox browser installation file was blocked by Microsoft Edge because the browser believed it could harm the user's computer, displaying a message such as: " Firefox installer.exe was blocked because it could harm your device ".

The blocked versions of Firefox appear to be unstable releases, such as Beta, Nighty, and Developer, while regular versions work fine and pass Microsoft Defender scans on computers.

One way to resolve this issue is to temporarily disable Microsoft Defender and re-enable it after successfully downloading Firefox. TipsMake tested this by downloading the Firefox Beta version, and the problem seems to have been resolved, as Microsoft Defender no longer flags the installer as dangerous.

Although the issue was quickly resolved, this wasn't the only time Microsoft prevented users from using a competitor's service. Currently, the company has not issued a statement regarding the entire situation.

In addition, Microsoft Edge has been recognized as the second most popular web browser on Windows, after Chrome, pushing Firefox down to a lower position.

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