Tag

Cpu Bug

All articles tagged with #cpu bug

Microsoft Fixes 5-Year-Old Windows Defender Bug Causing CPU Spikes on Firefox

Originally Published 2 years ago — by Slashdot

Featured image for Microsoft Fixes 5-Year-Old Windows Defender Bug Causing CPU Spikes on Firefox
Source: Slashdot

A CPU bug affecting Firefox users on Windows was actually the fault of Windows Defender's MsMpEng.exe, which handles the Real-Time protection feature that monitors web activity for malicious threats. The bug was causing Firefox to call on the service much more frequently than comparable browsers like Chrome or Edge, resulting in notable CPU spikes. The latest update to Windows Defender addresses the issue, resulting in measurably lower CPU usage for the Windows version of Firefox.

Microsoft resolves 5-year-old Windows Defender bug impacting Firefox performance.

Originally Published 2 years ago — by Neowin

Featured image for Microsoft resolves 5-year-old Windows Defender bug impacting Firefox performance.
Source: Neowin

Microsoft has finally fixed a five-year-old bug related to Windows Defender and its Antimalware Service Executable (MsMpEng.exe) service that caused high CPU usage on Mozilla Firefox. The bug was resolved by the efforts of Microsoft and the Mozilla development team, and the fix is now available for all users as part of regular definition updates. The bug did not affect Windows 7 and 8.1 users. There is further scope for improvements to the processor usage in Firefox when compared to Chrome.