I updated windows to 1903 recently. Checked all drivers, There is no update.
My headphone now only detects If I plugged them before windows startup.
I am trying my best but really can't find what's wrong.
In addition to the prior question, is there an update to your audio card driver?
Since you say "plugged in" I am not presuming Bluetooth connectivity, but if it is involved, your Bluetooth card drivers could be at play, too. Intel has been churning out WiFi/Bluetooth card updates with great regularity over the last year or so, all aimed at the Windows 10 platform and "modern drivers."