J-Trace PRO USB driver problems

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J-Trace PRO V2 Cortex-M and J-Trace PRO V2 Cortex do not use the SEGGER USB driver like J-Links do, but they use WinUSB instead. WinUSB was distributed by Microsoft via Windows Update so in case a USB device needed WinUSB, Windows downloaded it automatically in the background, where necessary. However, Microsoft changed their policy for Windows Vista / Windows 7 and WinUSB is no longer distributed via Windows Update. This may now lead to "no USB driver found" like problems when connecting J-Trace PRO to a PC for the first time.

Affected Operating Systems

  • Microsoft Windows 7
  • Microsoft Windows Vista


The easiest way to solve the driver issue is to install the required drivers manually. Please find below a step-by-step instruction:

  1. Download the following archive: WinUSBDriverInstall.zip
  2. Execute the InstallDriver.exe

If you still run into any issues, please contact SEGGER directly.