J-Trace driver (WinUSB) is installed but the driver could not be started

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Under Windows 10 the J-Link installer will successfully install the driver for J-Trace/J-Trace Pro. However under some circumstances the driver will be loaded and cannot be put into functional state.

Windows claims that the USB device is not recognized.

JLink-USBDeviceNotRecognized.png

Using the DeviceManager to look at the J-Trace Device Properties shows that the driver code not be started (Code 10).An additional error message says that a device which does not exist was specified.

JLink-DeviceProperties Code10.png

Even looking into Windows' EventViewer shows the mentioned error with some detailed information

JLink-DriverCode10 EventLog.png

.

But nonetheless it does not explain where the error is caused. Refer to Possible Problem Sources

Solution

In order to solve this, the registry needs to be edited.

Possible Problem Sources

The problem could be caused that the J-Trace/J-Trace Pro enumerated with valid MS OS Descriptors which is not necessary anymore. This feature has been disabled. Since Windows 10 still tries to retrieve this information, it will try to catch an internal device object which is not available anymore. Thus telling us that the mentioned device is not available. This can be disabled by removing the cached entry of the MS OS Descriptor information. This is stored in the registry. Refer to Solution

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