Percsas3i Service Defaults in Windows 11
Default Settings
| Startup type: | Manual |
| Display name: | Percsas3i |
| Service name: | percsas3i |
| Service type: | kernel |
| Error control: | normal |
| Group: | SCSI Miniport |
| Path: | %SystemRoot%\System32\drivers\percsas3i.sys |
| Registry key: | HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\percsas3i |
Default Behavior
Percsas3i is a kernel driver. In Windows 11 it starts only if the user, an application or another service starts it. If Percsas3i fails to start, the failure details will be recorded into Event Log. Then Windows 11 should boot up and notify the user about the percsas3i service startup failure.
Restore Default Startup Configuration of Percsas3i
1. Run the Command Prompt as an administrator.
2. Copy the command below, paste it into the command window and press ENTER:
sc config percsas3i start= demand
3. Close the command window and restart the computer.
The percsas3i service is using the percsas3i.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.