McAfee released a faulty update which impacted some enterprise customer and consumer base–home users of products globally. Per McAfee -
The error can result in moderate to significant issues on systems running Windows XP Service Pack 3.The immediate impact on corporate users was lessened for corporations who kept a feature called “Scan Processes on Enable” in McAfee VirusScan Enterprise disabled, as it is by default, though those customers could also be impacted when running a scan.
