Bluetooth is a wireless technology that has a short range, but provides high levels of security. It is commonly used in mobile phones to enable their hand-free use, allowing the user to take calls while performing other tasks, such as driving. Windows supports various Bluetooth devices, allowing the user to configure or control them through the operating system. The service responsible for managing this interoperability, however, may sometimes need to be restarted to regain its full functionality.
Open your "Start" menu and click "Run." If you don't see it, press and hold your "Windows" key on your keyboard (it has the Windows logo on it), then press "R" on your keyboard.
Type in "services.msc" and press "Enter."
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Scroll down to "Bluetooth Support Service."
Right-click "Bluetooth Support Service" and click "Restart." You may now close the Services window.