Bluetooth is a battery drain, and it’s risky to let just about any device connect with your system which is why discoverability for your system on Windows 10 is turned Off. The thing about Bluetooth is that it has a low range so if need calls, it might not be too risky to allow devices to find your system. If such a need does arise, you might want to know where you can manage your device’s Bluetooth discoverability in Windows 10 and we’re pointing you to the right place.
Go to the Settings app and click the Devices group of settings. Click the Bluetooth tab, scroll down to the ‘Related Settings’ and click ‘More Bluetooth options’.
This will open the Bluetooth settings window. In the very first tab ‘Options’ you will see a ‘Discovery’ section with an ‘Allow Bluetooth devices to find this PC’ option. Check the option, and click the ‘Apply’ button at the bottom for it to take effect. You won’t need to confirm the change nor restart your system for it to take effect. The only warning you get to any potential security risk that might arise as a result of this change is an alert message below the ‘Allow Bluetooth devices to find this PC’ option that says other devices will be able to see the name of your PC.
Allowing any and all devices to discover your system doesn’t mean that they will be able to connect with it. It simply means that any device scanning for Bluetooth enabled devices will see your system in their list and unless it’s a malicious attack, you have nothing to worry about.