Newer version of Logger Pro & Logger Lite use the WinUSB driver. If you are running Logger Pro 3.11 or newer with original LabQuest or LabQuest Mini, or Logger Pro 3.12 or higher with LabPro, you need to be on the WinUSB driver. For details see Are the device drivers installed correctly? (For Windows with LabPro, original LabQuests, LabQuest Mini, and LabQuest Stream) Most of the time the act of installing the newer version of the software will update the driver automatically, but if it isn’t you may need to change the driver manually. Note you have to be running as administrator to make this change.

Also note: you need to be running Logger Pro version 3.14.1 (or higher) or Logger Lite version 1.9.2 (or higher) or you will have issues with these steps: Logger Pro installer warns that Windows can't verify the publisher of this driver software. If you aren’t on those versions, install the update first, (it may make these steps unnecessary.)

Logger Pro version 3.15 explicitly removes old drivers and installs WinUSB based drivers preferentially. Upgrading to 3.15 maybe preferable to the following steps for older releases.

Easy Method:
– Go into the Device Manager, see What version of Windows am I running? Is it 32 bit or 64 bit?
– Find the LabQuest/LabQuest Mini/LabPro, they will be under either the “Jungo” or “VSTJungo” category.
– Right-click on the device and choose “Update Driver software”.

– Choose “Browse my computer for driver software”.
– Choose “Let me pick from a list of device drivers on my computer”.
– It will list two drivers with basically the same name. Choose the driver name that is NOT in all caps.

– Choose “Next”.
– Choose “Close”.

In certain situations, the easy method may not work. Also we’ve seen situations where the drivers will switch back on their own, specifically when installing certain Windows Updates. In that case:

Strong Method Part 1:
– Go into the Device Manager, see What version of Windows am I running? Is it 32 bit or 64 bit?
– Find the LabQuest/LabQuest Mini/LabPro, they will be under either the “Jungo” or “VSTJungo” category.
– Right-click on the device and choose “Uninstall”.
– Check the box for “Delete the driver software for this device” and then Press OK.
– Unplug USB cable to the interface and plug it back in.
– It will take a minute while it searches for drivers, (you will see an animated icon in your system tray while it is searching.) After it is done searching the device should show up under “Vernier WinUSB Bulk Sys Devices”. If that happens, you don’t need to continue to Part 2.

If the computer finishes searching for a driver but the LabQuest/LabQuest Mini/LabPro shows up under “Other devices” as a “Unknown device” then:
Strong Method Part 2:
– Right click on the Unknown device and choose “Update Driver software”.
– Choose “Browse my computer for driver software”.
– Press the “Browse” button
– Select a folder. The folder depends on your computer and device:
64 bit computers with LabPro: C:\Program Files (x86)\Common Files\Vernier Software\LabProWinUSB Driver
64 bit computers with original LabQuest: C:\Program Files (x86)\Common Files\Vernier Software\LabQuest Driver
64 bit computers with LabQuest Mini: C:\Program Files (x86)\Common Files\Vernier Software\LabQuestMini Driver
64 bit computers with LabQuest Stream: C:\Program Files (x86)\Common Files\Vernier Software\LabQuestStream Driver
32 bit computers with LabPro: C:\Program Files\Common Files\Vernier Software\LabProWinUSB Driver
32 bit computers with original LabQuest: C:\Program Files\Common Files\Vernier Software\LabQuest Driver
32 bit computers with LabQuest Mini: C:\Program Files\Common Files\Vernier Software\LabQuestMini Driver
32 bit computers with LabQuest Stream: C:\Program Files\Common Files\Vernier Software\LabQuestStream Driver
(Note there is a folder in this location called “LabPro” and “LabPro 64”, don’t choose those or it will load the old driver.)
– Choose “Next”.
– Windows 7 users may get a warning asking if they trust “Vernier Software and Technology LLC”, choose “Install”
– Choose “Close”.

If you are downgrading and want to go the other way, see:
How to reinstall old USB drivers after installing Logger Pro 3.11 or newer.