Based on the findings of this report, we recommend that users:

While the allure of free activation keys might be tempting, there are significant risks involved:

Bluetooth connectivity is a staple for modern devices, allowing everything from headsets to keyboards to sync seamlessly with your PC. However, many users with older hardware or specific Bluetooth dongles rely on IVT BlueSoleil software. While the software is powerful, the search for a BlueSoleil activation key free of charge is a common hurdle.

Go to Settings > Bluetooth & devices and toggle Bluetooth on. You can easily pair headsets, keyboards, mice, and phones without any extra software.