When troubleshooting powercfg /requests and you come across entries showing '[PROCESS] Legacy Kernel Caller', it can be confusing and frustrating. However, don't worry! In this article, we will explain what this entry means and provide step-by-step instructions on how to resolve the issue.
Understanding the '[PROCESS] Legacy Kernel Caller' Entry
The '[PROCESS] Legacy Kernel Caller' entry you see in the powercfg /requests output indicates that a legacy device driver or software component is preventing your computer from entering sleep or hibernate mode. This means that something on your system is actively requesting the operating system to stay awake, preventing it from entering a low-power state.
Legacy device drivers are software components that were designed for older versions of Windows and may not be fully compatible with the latest operating systems. These drivers can cause issues and prevent your computer from entering sleep mode.
Troubleshooting Steps
To resolve the '[PROCESS] Legacy Kernel Caller' issue, follow these steps:
Step 1: Update Device Drivers
The first step is to update your device drivers to the latest version. Outdated or incompatible drivers can cause conflicts and prevent your computer from entering sleep mode.
To update your device drivers:
- Press
Windows Key + Xon your keyboard and selectDevice Managerfrom the menu. - In the Device Manager window, expand the categories and locate any devices with a yellow exclamation mark icon indicating a driver issue.
- Right-click on the device and select
Update driver. - Choose the option to search automatically for updated driver software. Windows will then search for and install the latest drivers for the selected device.
- Repeat this process for all devices with driver issues.
After updating all the device drivers, restart your computer and check if the '[PROCESS] Legacy Kernel Caller' entry still appears in the powercfg /requests output.
Step 2: Uninstall Problematic Software
If updating the device drivers did not resolve the issue, it is possible that a software component is causing the problem. In this case, you need to identify and uninstall the problematic software.
To uninstall software:
- Press
Windows Key + Xon your keyboard and selectApps and Featuresfrom the menu. - In the Apps & Features window, scroll through the list of installed applications and locate any recently installed or suspicious software.
- Click on the software and select
Uninstall. - Follow the on-screen instructions to complete the uninstallation process.
- Restart your computer and check if the '[PROCESS] Legacy Kernel Caller' entry is no longer present.
If the issue persists, proceed to the next step.
Step 3: Disable Powercfg Requests
If updating device drivers and uninstalling problematic software did not resolve the issue, you can try disabling powercfg requests to allow your computer to enter sleep mode.
To disable powercfg requests:
- Open the Command Prompt as an administrator by right-clicking the Start button and selecting
Command Prompt (Admin). - In the Command Prompt window, type
powercfg -requestsoverride PROCESS "Legacy Kernel Caller" SYSTEMand press Enter. - Restart your computer.
After restarting, check if the '[PROCESS] Legacy Kernel Caller' entry is no longer present in the powercfg /requests output.
Conclusion
The '[PROCESS] Legacy Kernel Caller' entry in the powercfg /requests output indicates a legacy device driver or software component preventing your computer from entering sleep mode. By updating device drivers, uninstalling problematic software, or disabling powercfg requests, you can resolve this issue and allow your computer to enter a low-power state.
References
| Number | Source |
|---|---|
| 1 | Update drivers in Windows 10 |
| 2 | How to uninstall programs on Windows 10 |
| 3 | Powercfg command-line options |