Mouse isn't working
If your M600 mouse isn't working, the problem is likely a lost connection. The connection between the mouse and the Unifying receiver can be lost for several reasons, such as:
- Low battery levels
- Moving the receiver from USB one port to another
- Moving the receiver to another computer
- Plugging the receiver into a USB hub or other unsupported device such as a KVM switch (NOTE: Your Unifying receiver must be plugged directly into your computer.)
- Using your cordless mouse on metal surfaces
- Radio frequency (RF) interference from more powerful devices such as:
- Wireless speakers
- Computer power supplies
- Monitors
- Cell phones
- Garage door openers
Before reconnecting your mouse
Before you connect your mouse to a Windows computer:
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Fix or rule out the potential problem sources listed above.
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Turn your computer on.
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Insert fresh batteries in your mouse. For instructions on changing your mouse battery, see answer 360023408553.
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Turn your mouse on. The power indicator on the bottom should be green.
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Plug the receiver directly and securely into a working USB port on your computer.
Reconnecting your mouse
To reconnect your mouse to a Windows computer:
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Download the correct version of Logitech SetPoint mouse and keyboard software from the M600 Downloads page.
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Launch the Logitech Unifying Software:
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Windows: Start > Programs > Logitech > Unifying > Logitech Unifying Software
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When the Logitech Unifying Software Welcome screen displays, click Next to continue.
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Follow the on-screen instructions to turn your mouse off and then back on.
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When your mouse is detected, you'll see the confirmation message below. Click Yes and then Next.
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Click Finish to exit the Logitech Unifying Software. Your mouse should now be connected.
If this solution doesn't work after a couple of attempts, restart your computer and try the reconnection process again.
Mouse frequently stops working
- Keep other electrical devices at least 8 inches (20 cm) away from the Unifying receiver
- Move the mouse closer to the Unifying receiver
- Move the receiver to a different USB port on your computer