USB Device Emulation Support Library (UdeCx) Service Defaults in Windows 10
"udecx.DRIVER" by Microsoft Corporation.
Default Settings
| Startup type: | Manual |
| Display name: | USB Device Emulation Support Library |
| Service name: | UdeCx |
| Service type: | kernel |
| Error control: | normal |
| Path: | %SystemRoot%\system32\drivers\udecx.sys |
| Registry key: | HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\UdeCx |
Default Behavior
USB Device Emulation Support Library is a kernel device driver. In Windows 10 it is starting only if the user, an application or another service starts it. If USB Device Emulation Support Library fails to start, the failure details are being recorded into Event Log. Then Windows 10 will start up and notify the user that the UdeCx service has failed to start due to the error.
Restore Default Startup Configuration of USB Device Emulation Support Library
1. Run the Command Prompt as an administrator.
2. Copy the command below, paste it into the command window and press ENTER:
sc config UdeCx start= demand
3. Close the command window and restart the computer.
The UdeCx service is using the udecx.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.