USB Device Emulation Support Library - Windows 10 Service
"udecx.DRIVER" by Microsoft Corporation.
This service also exists in Windows 11.
Startup Type
| Windows 10 version | Home | Pro | Education | Enterprise |
|---|---|---|---|---|
| 1507 | Manual | Manual | Manual | Manual |
| 1511 | Manual | Manual | Manual | Manual |
| 1607 | Manual | Manual | Manual | Manual |
| 1703 | Manual | Manual | Manual | Manual |
| 1709 | Manual | Manual | Manual | Manual |
| 1803 | Manual | Manual | Manual | Manual |
| 1809 | Manual | Manual | Manual | Manual |
| 1903 | Manual | Manual | Manual | Manual |
| 1909 | Manual | Manual | Manual | Manual |
| 2004 | Manual | Manual | Manual | Manual |
| 20H2 | Manual | Manual | Manual | Manual |
| 21H1 | Manual | Manual | Manual | Manual |
| 21H2 | Manual | Manual | Manual | Manual |
| 22H2 | Manual | Manual | Manual | Manual |
Default Properties
| Display name: | USB Device Emulation Support Library |
| Service name: | UdeCx |
| Type: | kernel |
| Path: | %WinDir%\system32\drivers\udecx.sys |
| Error control: | normal |
Default Behavior
The USB Device Emulation Support Library service is a kernel mode driver. If USB Device Emulation Support Library fails to start, the error is logged. Windows 10 startup proceeds, but a message box is displayed informing you that the UdeCx service has failed to start.
Restore Default Startup Type of USB Device Emulation Support Library
Automated Restore
1. Select your Windows 10 edition and release, and then click on the Download button below.
2. Save the RestoreUSBDeviceEmulationSupportLibraryWindows10.bat file to any folder on your hard drive.
3. Right-click the downloaded batch file and select Run as administrator.
4. Restart the computer to save changes.
Note. Make sure that the udecx.sys file exists in the %WinDir%\system32\drivers folder. If this file is missing you can try to restore it from your Windows 10 installation media.