[Software] Fixed a Windows Defender bug, after 5 years, that slowed down Firefox

[[Ty]M@g0k1l3r]

Microsoft's own and integrated antivirus in its operating systems is quite well valued in the industry. But, it doesn't always work as it should, or at least it can negatively affect system performance. The company, after five years, has corrected a Windows Defender problem that caused problems in the Firefox browser.

Possibly one of the best features of Windows 10 and later is its antivirus. The company integrates it at no additional cost and in different security audits, it is always the best rated or is among the five best rated. But, its cost in system performance can be significant.

Microsoft is still using Internet Explorer, it seems
Users with the Mozilla Firefox browser were experiencing slowdowns when using this software. Specifically, the problem was with the "anti-malware service executable" function of Windows. Said element has to do with Defender and supposes an excessive use of up to 30% in the processor.

Using Firefox and Windows Defender in parallel caused the two tools to clash. This problem ended last week, after five years. The fix fixes the Defender component "MsMpEng.ese" which reduces processor usage by up to 75%.

 

 

Developers from Microsoft and Mozilla have collaborated to correct the problem. In addition, one of the engineers from the browser's development team has given data in this regard. Specifically, we are talking about Yannis Juglaret, who has provided data through Mozilla's Bugzilla monitoring system.

He can read online that Defender was making too many calls to VirtualProtect, and that overall CPU usage will now drop by 75% when browsing with Firefox. This is absolutely wrong! The impact of this fix is that on all computers that rely on the Microsoft Defender real-time protection feature (which is enabled by default in Windows), MsMpEng.exe will consume much less CPU than before by monitoring the dynamic behavior of any program via Event Tracing for Windows (ETW). Nothing less, nothing more

Yannis Juglaret

It should be noted that Juglaret indicates that Firefox performance could still be further optimized. He points out that processor usage can be further reduced, but in this case, with any antivirus and not just Defender.

Within Reddit, quite satisfactory reports have been published by different users. This is great as these users will get a better experience.

 

https://hardzone.es/noticias/equipos/arreglado-bug-windows-defender-mozilla-firefox/