My work PC has Windows 10. I'm allowed to use a personal mouse and attached a three-button cordless Logitech T400. It works fine, even though according to Logitech it's "not supported on Windows 10."
The middle button opens the Windows Start Menu, so it's clearly being recognized by the OS. However, I'd like the middle button to go through to the software I'm using, which (as someone who uses Unix remotely, X-server, and the terminal emulation software Putty and so on) uses the middle button constantly for pasting.
On older OS's, installing Logitech drivers gives you a few panes' worth of configuration options, one being to handle middle button differently. I've installed Windows 10 SetPoint and Unifying from Logitech, but neither was needed to get the mouse working (it worked fine from the beginning) and neither has the options I need.
After several hours of web-surfing, I've had two likely-looking ideas. The first is a Windows utility program, "Mouse and Keyboard Center 12." However, when unpacking the download it issues an error message: "Setup cannot continue because one or more of the required installation files are missing of damaged. Run Setup again from the software CD-ROM or another reliable installation source." I'll follow up on that.
The second is a long-standing and well-thought-of utility called X-Mouse Button Control 2.18.8 available at http://www.highrez.co.uk/downloads/XMouseButtonControl.htm I've installed this software and it is "working"... kind of. I've configured a terminal emulator Mobaxterm to "paste on RIGHT click." Now, I have a Thinkpad-style trackpoint USB keyboard with three buttons. And when I tell X-Mouse that Middle Button should generate event Right Click, I indeed get the paste I want! This shows X-Mouse is translating events. And if I leave Middle Button as " No Change (Don't Intercept)" and MobaXterm is not set to paste on right click, the middle button event gets through to the terminal emulator. The middle button also gets through to an emacs (an editor program) window running via Moba's X-server functionality.
However, the Logitech's middle button is still for some reason opening the Windows 10 Start Menu!!! Using X-Mouse to translate Middle Button to "Right Click" has no effect. Middle Button opens the start menu anyway. But when I try to use X-Mouse to direct the Right Button to generate a Left Click, THAT works. For instance double-right-clicking a word in a MobaXTerm selects it, just as double-left-clicking is expected to do.
My working theory is that there's some process, utility, setting, or something, that is turning the Logitech middle-clicks into SOMETHING (Left Windows Key??) before the X-Mouse Button Control utility is even getting the event.
Any ideas what that could be?