UCM in Windows 11/10 - UCSI VPI device driver error

UCM - The UCSI VPI is critical to your computer as it is responsible for managing the USB Type-C ports. When you encounter error messages for this driver in Device Manager, it will affect the normal working of your USB Type-C port. Therefore, it is crucial to resolve this issue promptly and this article will guide you on how to resolve the issues caused by this error message.

UCM - UCSI ACPI, Windows has stopped this device because it reported a problem (code 43).

What is UCM—UCSI VPI device driver?

Microsoft provides a driver that complies with the USB Type-C® Connector System Software Interface (UCSI) specification for TPI transmission. If your system design contains an embedded controller for VPI transmission, UCSI should be implemented in the system's BIOS/EC and the In-box UCSI driver (UcmUcsiCx.sys and UcmUcsiAcpiClient.sys) should be loaded. The UCSI or USB Type-C connector system software interface driver allows control of USB Type-C components, while the UCM-UCSI driver facilitates communication with these hardware components. Since the Windows 11 Version 22 H2 September Update, the Windows UCM—UCSI VPI device driver now supports UCSI specification versions 2.0 and 2.1.

Fix UCM-UCSI ACPI device driver error in Windows 11/10

To resolve the UCM-UCSI VPI device driver error, we will take the following steps to fix the problem. The UCSI or USB Type-C connector system software interface driver is designed to manage USB Type-C components, while the UCM-UCSI driver facilitates communication with these hardware elements. When facing UCM-UCSI VPI device driver errors, we need to carefully check the driver's configuration and settings to ensure that it matches the hardware elements exactly. At the same time, we also update the driver to the latest version to ensure it is compatible with the operating system and fix any known issues. Additionally, we will perform a system reboot to apply the new driver settings and test to verify that the issue has been resolved. With these steps, we hope to be able to effectively resolve UCM-

Update Driver

Restart or reinstall the driver

Restart hardware

1]Update driver

It is recommended that you first try to update the driver of the UCM-UCSI VPI device. By updating your drivers, you can eliminate possible causes of errors and compatibility issues. Check your system for available drivers and optional updates and install them promptly. Additionally, you may also consider installing free driver update software to automate the process. This ensures that your device drivers are always up to date, improving system stability and performance.

2] Restart or reinstall the driver

When a driver file is damaged or has problems, an exclamation point will usually appear next to it. You can resolve this issue by restarting or reinstalling the driver. The steps to perform these operations are listed below.

Open Device Manager.

Go to the USB Controller Manager section, expand it, and right-click on UCM—UCSI VPI Device.

Click to disable the device, wait a few seconds, and then re-enable it.

If this doesn't work, right-click on the driver and select Uninstall Device.

After removing the driver, right-click on the USB Controller Manager option and click Scan for Hardware Changes.

It will automatically install the driver.

Hope this will resolve the issue for you.

3]Restart hardware

If all else fails, your last resort should be to remove all devices (including the AC adapter) from the computer, wait a few seconds, and then reconnect. If you're not sure how to do this, talk to a hardware expert and ask them to do it.

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