Windows not recognizing an MX Keys is almost always a driver or corrupted Bluetooth service issue. The keyboard itself works (test on Mac or Linux), but Windows refuses to register it as an input device. A common cause: a conflict between Logitech's software and the Windows Bluetooth stack.
Diagnosis
Decisive test: plug via USB-C wired into Windows. (1) Recognized via USB-C but not Bluetooth = Bluetooth driver issue; (2) Not recognized via USB-C either = general HID driver issue or Logi Options+ conflict; (3) Recognized but doesn't type = rare keyboard driver issue.
How to fix it
- 1
Uninstall Logi Options+ (Control Panel → Programs), restart Windows.
- 2
Go to Device Manager → HID devices → uninstall any device with yellow triangle icon.
- 3
Restart Windows again so native HID drivers reinstall automatically.
- 4
Reinstall Logi Options+ from logitech.com (latest version, not via Microsoft Store).
FAQ
My MX Keys works on Mac but not Windows — why?
The keyboard is fine, it's Windows that's the issue. Mac uses very stable native HID drivers from Apple, Windows uses a more finicky Bluetooth driver stack. Fix is almost always on the Windows side (driver reinstall or Bluetooth stack reset).
Do I need to install Logi Options+ to use MX Keys on Windows?
No, the keyboard works in standard HID mode with no software. Logi Options+ adds advanced features (key customisation, Flow, Smart Actions) but is not mandatory for basic typing.
Is MX Keys S compatible with Windows 11?
Yes. Logitech lists it as compatible with Windows 10 and 11, as well as recent macOS and iPadOS. If not recognized, it's a local driver issue, not an incompatibility.
An MX Keys that Windows won't recognise is most often a corrupted HID or Bluetooth driver. Uninstall Logi Options+ + reboot fixes most cases.