UCM-UCSI ACPI Client (UcmUcsiAcpiClient) Service Defaults in Windows 11
Default Settings
| Startup type: | Manual |
| Display name: | UCM-UCSI ACPI Client |
| Service name: | UcmUcsiAcpiClient |
| Service type: | kernel |
| Error control: | normal |
| Path: | %SystemRoot%\System32\drivers\UcmUcsiAcpiClient.sys |
| Registry key: | HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\UcmUcsiAcpiClient |
Default Behavior
UCM-UCSI ACPI Client is a kernel driver. In Windows 11 it starts only if the user, an application or another service starts it. If UCM-UCSI ACPI Client fails to start, the failure details will be recorded into Event Log. Then Windows 11 should boot up and notify the user about the UcmUcsiAcpiClient service startup failure.
Restore Default Startup Configuration of UCM-UCSI ACPI Client
1. Run the Command Prompt as an administrator.
2. Copy the command below, paste it into the command window and press ENTER:
sc config UcmUcsiAcpiClient start= demand
3. Close the command window and restart the computer.
The UcmUcsiAcpiClient service is using the UcmUcsiAcpiClient.sys file that is located in the C:\Windows\System32\drivers directory. If the file is removed or corrupted, read this article to restore its original version from Windows 11 installation media.