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--- manual:demos:usb_driver_install [2023/06/27 09:44]
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+++ manual:demos:usb_driver_install [2023/06/27 10:02]
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@@ Line 23: / Line 23: @@
 {{:manual:openblt_usb_device_manager.png?|}}
+==== Troubleshooting ====
+If for some reason, the USB driver installation fails and the **WinUSB Bulk Device** still shows up with a yellow exclamation mark in the Device Manager, try the following:
+  - Right-click the **WinUSB Bulk Device** entry in the Windows Device Manager and select "Uninstall Device" from the pop-up menu. If the confirmation dialog offers a checkbox to also uninstall the driver, go ahead and check that one as well.
+  - Unplug the USB device and then plug it back into your PC. Attempt the USB driver installation again, if it does not yet support the automatic WinUSB driver install (OpenBLT >= 1.16).
+If it still doesn't work, repeat steps one and two, but before moving on to step two, do this:
+  * Using the Window Registry Editor, locate the key: ''HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\usbflags\'' and remove all entries that start with OpenBLT's VID/PID: ''1D5060AC''.
+  * Using the Window Registry Editor, locate the key: ''HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Enum\USB\'' and remove the OpenBLT VID/PID entry: ''VID_1D50&PID_60AC''.

OpenBLT Bootloader