In some cases, winusb.dll errors could indicate a registry problem, a virus or malware issue, or even a hardware failure.
Winusb.dll Errors
There are several ways winusb.dll error messages might be phrased, depending on the cause of the problem. Here are some examples:
Winusb.dll Not FoundThe file winusb.dll is missingThis application failed to start because winusb.dll was not found. Re-installing the application may fix this problemCannot find [PATH]\winusb.dllCannot start [APPLICATION]. A required component is missing: winusb.dll. Please install [APPLICATION] again
These error messages might appear while using or installing certain programs, when Windows starts or shuts down, or maybe even during a Windows installation. Noting at what point your error shows up is an important piece of information that will be helpful during troubleshooting.
How to Fix Winusb.dll Errors
Follow these steps in the order they’re given below to try the simpler solutions first.
Need More Help?
If you’re not interested in fixing this DLL problem yourself, see How Do I Get My Computer Fixed? for a full list of your support options, plus help with everything along the way like figuring out repair costs, getting your files off, choosing a repair service, and a lot more. If you suspect this, but you’ve already emptied the Recycle Bin, you may be able to recover the file with a free data recovery program. It’s even possible that the winusb.dll error you’re seeing is related to a hostile program that’s masquerading as the file. Fortunately, the winusb.dll file is provided by Microsoft in at least some versions of Windows, so the System File Checker tool (the sfc command) should restore it. This step is most useful for replacing DLL files that aren’t supplied by Microsoft, but it could help with your winusb.dll problem if this program also provides a copy of the file and the previous troubleshooting ideas weren’t successful. If the hardware fails any of your tests, replace the memory or replace the hard drive as soon as possible.
