Harmony remote isn't detected by the computer

Helpful tips

• Use the USB cable that came with your remote as some USB cables may not work correctly.
• Check that the USB cable is securely connected directly to your computer.
  • Do not use USB hubs.
  • Try using a different USB port on your computer.
  • Harmony 200/300/350/600/650/700 remotes should have batteries installed.
  • Harmony Ultimate, Ultimate One & Touch remotes connect directly to the computer. Do not connect the charging cradle to the computer.
  • Harmony Hubs will take 30 seconds to be detected after being plugged into the computer.
• Confirm that the USB cable is connected to your remote properly.
• Try rebooting your computer.
• Try rebooting the Harmony remote by holding the power button for 15 seconds.
• Try setting up your remote using a different computer.

Harmony 900, 1000 & 1100

Using Logitech Harmony Remote legacy software on macOS 10.15+ requires a system software extension from Logitech Inc. to be enabled. If this is not allowed, the Harmony software will not be able to connect and communicate with your Harmony remote.

The Harmony software may stall when detecting your remote during setup, or when you are trying to update your remote. This driver is required for the Harmony 900, 1000, and 1100 remotes.

Enabling the extension

1. Go to your System Preferences by clicking the apple on the top left of your screen.
2. Click on Security and Privacy.
3. Click on the General tab.
4. On the bottom, click on the authentication lock icon to make changes. Enter your password when prompted.
5. You will see a message stating "System software from developer Logitech Inc. was blocked from loading". Click on Allow.
6. If your Mac recommends rebooting your computer, do so.

Removing the extension

1. Open your Finder window by clicking on the Finder icon on your dock.
2. Select Go from the top menu bar and select Go To Folder.
3. Type /Library/Extensions/.
4. Locate the file logitech.kext and drag it to the Trash.