Hello abcloc009998,
Welcome to Microsoft Office Community Forum. Thank you for sharing your concern with us today and we hope that all is well.
We understand that you are having issues with your Bluetooth Handsfree feature, Let’s us check on this together and sort this out. Rest assured, we will do anything in our capability to assist you with your concern.
Sometimes, this issues occurs due to System Service getting disabled or not set to start automatically.
Here is a method that we can perform that can possibly fix the issue.
Press on Windows + R , to open run
Type services.msc and click on OK
On the Services screen, make sure Bluetooth Support, Bluetooth Handsfree and other Bluetooth related Services are running.

If it is disabled, double-click on the disabled service. On the next screen, set the Startup type to Automaticand click on the Start button.

Once applied test you headphones handsfree feature.
We look forward to your response. If you have other clarifications about this matter, you can get back to us by replying to this post.
Sincerely,
Carlo O.
Microsoft Community