IR Bus Enumerator (IRENUM) Service Defaults in Windows 8

IR Bus Enumerator.

Default Settings

Startup type: Manual
Display name:IR Bus Enumerator
Service name:IRENUM
Service type:kernel
Error control:ignore
Registry key:HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\IRENUM

Default Behavior

The IR Bus Enumerator service is a kernel device driver. In Windows 8 it will not be started until the user starts it. If IR Bus Enumerator fails to load or initialize, Windows 8 startup proceeds. The error details should be added to Event Log without notifying the user.

Restore Default Startup Configuration of IR Bus Enumerator

1. Run the Command Prompt as an administrator.

2. Copy the command below, paste it into the command window and press ENTER:

sc config IRENUM start= demand

3. Close the command window and restart the computer.

The IRENUM service is using the irenum.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 8 installation media.