What is usbohci?

Usbohci.sys is a Windows driver. A driver is a small software program that allows your computer to communicate with hardware or connected devices. This means that a driver has direct access to the internals of the operating system, hardware etc. The free file information forum can help you determine if usbohci.sys is a Windows system file or if it belongs to an application that you can trust.

Run a free scan to check for usbohci drivers in need of updating

Usbohci.sys file information

The process known as OHCI USB Miniport Driver belongs to software Microsoft USB Open Host Controller Miniport Driver or Miniporttreiber für Microsoft USB Open Host-Controller or Microsoft Windows Operating System by Microsoft (

Description: The original usbohci.sys is an important part of Windows and rarely causes problems. Usbohci.sys is located in the C:\Windows\System32\drivers folder. Known file sizes on Windows 10/8/7/XP are 17,024 bytes (88% of all occurrences) or 17,152 bytes. 
The driver can be started or stopped from Services in the Control Panel or by other programs. It is a Windows system file. The program has no visible window. The file is a trustworthy file from Microsoft. There is no detailed description of this service. Therefore the technical security rating is 0% dangerous, however you should also read the user reviews.

Recommended: Identify usbohci.sys related errors

Important: Some malware disguises itself as usbohci.sys, particularly when not located in the C:\Windows\System32\drivers folder. Therefore, you should check the usbohci.sys process on your PC to see if it is a threat. We recommend Security Task Manager for verifying your computer's security. This was one of the Top Download Picks of The Washington Post and PC World.


User Comments

need it for host controller
usbohci.sys is part of Windows. The USB miniport drivers load the USB port driver once the PCI bus enumerator loads the appropriate miniport drivers. Usbohci.sys is loaded for open host controller interface (OHCI) hardware.
  Peter   (further information)

Rating chart

Summary: Average user rating of usbohci.sys: based on 8 votes with 2 user comments. 6 users think usbohci.sys is essential for Windows or an installed application. One user thinks it's probably harmless. One user thinks it's neither essential nor dangerous.

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Best practices for resolving usbohci issues

A clean and tidy computer is the key requirement for avoiding problems with usbohci. This means running a scan for malware, cleaning your hard drive using cleanmgr and sfc /scannow, uninstalling programs that you no longer need, checking for Autostart programs (using msconfig) and enabling Windows' Automatic Update. Always remember to perform periodic backups, or at least to set restore points.

Should you experience an actual problem, try to recall the last thing you did, or the last thing you installed before the problem appeared for the first time. Use the resmon command to identify the processes that are causing your problem. Even for serious problems, rather than reinstalling Windows, you are better off repairing of your installation or, for Windows 8 and later versions, executing the DISM.exe /Online /Cleanup-image /Restorehealth command. This allows you to repair the operating system without losing data.

To help you analyze the usbohci.sys process on your computer, the following programs have proven to be helpful: Security Task Manager displays all running Windows tasks, including embedded hidden processes, such as keyboard and browser monitoring or Autostart entries. A unique security risk rating indicates the likelihood of the process being potential spyware, malware or a Trojan. Malwarebytes Anti-Malware detects and removes sleeping spyware, adware, Trojans, keyloggers, malware and trackers from your hard drive.

Other processes

usbohci.sys [all]