After 5 years of ignoring, Microsoft and Mozilla finally fixed the error that ‘consumes’ CPU performance on Firefox

After nearly half a decade, a serious software conflict bug in the Firefox browser has finally been fixed by Microsoft and Mozilla.

Accordingly, this error is related to the Windows Defender security tool built into Windows, which causes abnormally high CPU usage when users use the Firefox browser at the same time.

As noted, the above incident causes the system resources of the user’s PC to be ‘consume’ extremely significantly. For instance, the image below (taken at the time of the initial bug report) shows the average CPU usage after 6 reloads of YouTube on Firefox which is much higher than in other browsers like Google Chrome and Microsoft Edge.

Worth mentioning, this problem has actually existed since 2018, with a large number of users reporting the error to Mozilla, but this developer did not take any action to fix it.

Until now, the above error has been resolved thanks to the efforts of Microsoft and the development team at Mozilla. Yannis Juglaret, a developer currently working at Firefox, has confirmed the fix will apply to all versions of Windows operating systems still supported by Firefox. This means that users using Windows 7 and 8.1 will also receive the patch.

Also according to a Mozilla representative, users experiencing issues will notice a significant improvement after updating the patch, with an approximate 75% improvement in CPU usage with the MsMpEng.exe process (core task). of Windows Defender) when surfing the web using Firefox.

Mozilla’s Firefox was once a ‘power’ in the web browser field in the early 2000s. When most started switching to Chromium-based browsers, Firefox became the default browser for Linux and people alike. privacy-minded users. However, Firefox’s user base continues to plummet, with a market share of just over 3%.

According to many experts, one of the main reasons why many users decide to flock to other browsers comes from bad decisions made by Mozilla, including the removal of features that are popular with the majority of users. .

Interestingly enough, despite being Mozilla’s biggest competitor from over a decade ago, Google is responsible for 90% of the revenue Mozilla earns. Specifically, Mozilla received about 450 million USD to keep Google as the default search engine in Firefox.

Refer to Neowin