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About Logitech Driver Interface Drivers

Something interesting happens on Windows 10 systems with Logitech mice and unifying transceivers. Go into Device Manager, and turn on “Show hidden devices” in the View menu. On such PCs, you’ll see a usually hidden device category called “DriverInterface” show up. On systems with a Logitech mouse and unifying transceiver (UT for short), at least two Logitech Driver Interface devices appear. In figuring out more about Logitech Driver Interface drivers, I’ve learned what the icon question mark means. To begin, here’s what these items look like on most of my Logitech-equipped PCs (5 of 9 here at Chez Tittel):

All three items include blue question marks. What’s that about?

The Question Mark in Logitech Driver Interface Drivers

Turns out that the blue question mark has a specific meaning when it shows up in Device Manager. Here’s a table from a Lenovo web page entitled “What does the icons mean in Device Manager” [sic: should of course be “What do the icons mean in Device Manager?”].

Here are symbols that can appear on DevMgr icons, with associated meanings.
[Click image for full-sized view.]

As you can see (or perhaps not) a question mark comes with an explanation. It reads “This indicates that an exact device-specific driver is not available, and that a compatible driver has been installed.” Curiously, driver information appears as normal and unexceptional in the Driver tab for that device, as follows:

Things get interesting when you click the “Driver Details” button (outlined in blue on the preceding screenshot). Normally, this is how one produces vendor IDs and other useful descriptive information about an underlying physical or virtual device. But here, we get none of that. This is what shows up instead:

What’s It All Mean?

This final message in the sequence tells us everything we need to know. Microsoft provides a compatible driver (as the question mark indicates). But that driver is neither needed nor used. It’s not even loaded, as the response window clearly states. This also tells us why these items don’t show up unless we force them to appear with “Show hidden devices” in Device Manager. Because they’re not needed, loaded, or used, DevMgr need not show them to us, either. I’ve been trying to “fix” these for years. Now I finally understand that no fixing is needed, because there’s nothing going on here anyway. Go figure!


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hey Ed

am asking here 'cause google returned no more relevant hits, and such issues appear to be of interest to you..

i am using windows 10 pro 1903, a logitech k810 kb, g703 mouse (wirelessly), and trying (re) install a f710 controller - a peripheral that has been intermittently uncooperative and mis/unidentified since upgrading to windows 10 years ago

lately, under 'other devices', there are now two (?) instances of 'logitech HID device', and just like lafargeotte on tenforums (your advice to them is how i got here), every time i uninstall they simply reappear

the only logitech software i've left installed is g hub (for mouse), and 'mouse and keyboard settings' for the k810

when i plug in the controller's nanoreceiver, sometimes it shows up in the 'devices' section of w10 settings - but only for split second before disappearing again..

i can't use the  'f710 connect utility' program offered by logitech, as this requires drivers to actually be installed before it will work, and i can't install drivers for a device that windows says doesn't exist 

- trying to install the xbox 360 wireless driver (which is usually required to get the f710 to function properly once actually identified) on either of these 'HID' devices does not work either  :(

any ideas or advice ?