RAS Asynchronous Media Driver (AsyncMac) Service Defaults in Windows 10
RAS Asynchronous Media Driver.
Default Settings
| Startup type: | Manual |
| Display name: | RAS Asynchronous Media Driver |
| Service name: | AsyncMac |
| Service type: | kernel |
| Error control: | normal |
| Path: | %SystemRoot%\System32\drivers\asyncmac.sys |
| Registry key: | HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\AsyncMac |
Default Behavior
RAS Asynchronous Media Driver is a kernel device driver. In Windows 10 it is starting only if the user, an application or another service starts it. If RAS Asynchronous Media Driver fails to start, the failure details are being recorded into Event Log. Then Windows 10 will start up and notify the user that the AsyncMac service has failed to start due to the error.
Restore Default Startup Configuration of RAS Asynchronous Media Driver
1. Run the Command Prompt as an administrator.
2. Copy the command below, paste it into the command window and press ENTER:
sc config AsyncMac start= demand
3. Close the command window and restart the computer.
The AsyncMac service is using the asyncmac.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 10 installation media.