Windows 10 updates blocking USB driver installation.

A manual driver installation is usually unnecessary for Windows 10 or 11. Remove ALL the jumpers off the USB board. The NCE system and the USB device must be plugged in and powered on for the PC to install the driver. Uninstall McAfee or other AV software before trying to install a driver. Look in the Windows update section, the advanced update section, the optional driver update section, and the Windows optional update sections. Install everything in all sections. Keep rebooting as required and checking these sections until they're both empty and up to date.


*Note: You may need to temporarily uninstall McAfee or other antivirus software that prevents automatic installation of software drivers.


You might need to specifically allow Windows 10 to complete if you see this message or something similar in Windows Device Manager under the Other Devices category:



Windows 10 instructions: How to Install Optional Updates

To check for optional updates, Click your Start button, then Settings > Update & Security > Windows Update. Click “Check for Update” to see if there are any available updates.


Windows will automatically install any mandatory updates (including security and non-optional cumulative updates).


2:   If an optional quality update is available, you’ll see a message below the “Check for Updates” button. Click “Download and Install”. Complete this section next. mceclip1.png

If you have no regular Windows updates that need to be done, then it will look like this instead:



3.  Click “View all optional updates or View optional updates.”  You should see this:


Click the Black arrow to expand the section and see your optional update list.

Look for something that says Silicon Labs CP210X or CH340. Check that box and start the installation.


Go back to the Windows device manager, and you should see something like this under ports:

Either version will work

The driver is now installed correctly. Make a note of the COM port number used by the cable. Your software will need to be configured for the same port number. In JMRI, in the Decoder Pro top menu bar: Edit, Preferences, connections



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