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Gordony's avatar
Gordony
Iron Contributor
Apr 07, 2026

Windows 11 Extended Copy Utility High CPU Usage

Extended Copy Utility uses 20-30% CPU on Windows 11 startup, located in C:\Windows\WinS. How to reduce its CPU usage?

deployment
device management

2 Replies

  • AsherBowie's avatar
    AsherBowie
    Iron Contributor
    Apr 13, 2026

    Disable Extended Copy Utility on the Startup tab in Task Manager, and check if it is a background service for third-party backup software.

  • Mustafoan's avatar
    Mustafoan
    Brass Contributor
    Apr 10, 2026

    Extended Copy Utility (ECU) is a system component that can sometimes run in the background, especially during startup, and may cause high CPU usage. Since it's located in C:\Windows\WinS, it might be part of your system or a third-party utility.