Microsoft says certain Bluetooth devices might start experiencing pairing and connectivity issues after Windows users apply cumulative, security, or monthly rollup updates released today. Microsoft: “These security updates address a security vulnerability by intentionally preventing connections from Windows to unsecure Bluetooth devices”” The security fobs part at the end refers to Google’s Bluetooth Low Energy (BLE) Titan Security Keys with a T1 or T2 code which were recalled last month and to the Feitian Multipass (Feitian CTAP1/U2F Security Key)”
Source: https://www.bleepingcomputer.com/news/security/microsoft-blocks-some-bluetooth-devices-due-to-security-risks/