ACPI Processor Aggregator Driver - Windows 11 Service
ACPI Processor Aggregator Device Driver by Microsoft Corporation.
This service also exists in Windows 10 and 8.
Startup Type
| Windows 11 version | Home | Pro | Education | Enterprise |
|---|---|---|---|---|
| 21H2 | Manual | Manual | Manual | Manual |
| 22H2 | Manual | Manual | Manual | Manual |
| 23H2 | Manual | Manual | Manual | Manual |
| 24H2 | Manual | Manual | Manual | Manual |
Default Properties
| Display name: | ACPI Processor Aggregator Driver |
| Service name: | acpipagr |
| Type: | kernel |
| Path: | %WinDir%\System32\DriverStore\FileRepository\acpipagr.inf_amd64_d1093347a27ff89c\acpipagr.sys |
| Error control: | normal |
Default Behavior
The ACPI Processor Aggregator Driver service is a kernel mode driver. If ACPI Processor Aggregator Driver fails to start, the error is logged. Windows 11 startup proceeds, but a message box is displayed informing you that the acpipagr service has failed to start.
Restore Default Startup Type for ACPI Processor Aggregator Driver
Automated Restore
1. Select your Windows 11 edition and release, and then click on the Download button below.
2. Save the RestoreACPIProcessorAggregatorDriverWindows11.bat file to any folder on a local drive such as SSD or a hard disk.
3. Right-click the downloaded batch file and select Properties.
4. Check the Unblock checkbox and click OK.
5. Right-click the batch file again and select Run as administrator.
6. Restart the computer to save changes.
Note. Make sure that the acpipagr.sys file exists in the %WinDir%\System32\DriverStore\FileRepository\acpipagr.inf_amd64_d1093347a27ff89c folder. If this file is missing you can try to restore it from your Windows 11 installation media.