Pairing your AirPods with an Apple device is usually a quick process; pairing with a Windows computer requires some manual labor. Connecting your Apple AirPods (or AirPods Pro) with your mobile device or computer should happen seamlessly and automatically. But that's not always the case, especially if you're using a Windows computer and you try to jump from one device to another.

Link: How to connect your Apple AirPods to your mobile device or computer
via http://www.techrepublic.com