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If that doesn’t help, seek help from a technician or contact Logitech support. Check if the device works and put everything back together.Check for cable connections and then disconnect and reinsert them if possible.Disconnect the sensor and reconnect it again.
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If it does, glue or tape stick the cap with the receiver.
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Here are some potential reasons for your Logitech Unifying Receiver not working on Windows:
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