Same thing here: on 3 different sets of Bluetooth headsets: only the headphones or only the microphone can be enabled at any one time. This behavior started immediately after the Windows 11 25H2 update was installed.
- If the headphones are set as the output, the microphone is produces no input and just clicks once when you try to engage it, oftentimes crashing whatever software is trying to use it.
- If the microphone is enabled first, then it will work, but the headphones will not and won't output any sound.
- Everything works as long as you set the input and output devices to be different.
The machine is a Lenovo X1C G13 with the Intel BE201 Bluetooth chipset and the latest Intel 23.160.0.9 driver as of 10/29/2025 (driver build date is 7/20/2025). The headsets I've tried were 3 different models and generations of Bose wireless headphones and earbuds.
Solutions attempted:
- Rebooting
- Removing the Intel Bluetooth device, reinstalling device and driver
- Rolling back Bluetooth driver to 4/2025
- Upgrading driver to the newly-released 23.170.0.3
- Removing and Re-adding headsets
Update: the solution ended up being updating to the 26200.7019 (or 26100.7019 for 24H2) preview build of Windows by installing KB5067036 manually, along with updating the Intel BE202/BE201/BE200 driver to version 23.170.0.3 and rebooting.