1. Make sure you've installed the latest updates from Windows Update. (A solution for this issue was included in the October 24, 2018—KB4462933 (OS Build 17134.376) update for Windows 10 version 1803.)
2.  
3. To check for updates, select the Start  button, and then go to Settings  > Update & security  > Windows Update > Check for updates.
4. Manually disable the Absolute Volume feature by making a change in the registry. To do this, go to Start and type cmd. Right-click Command Prompt in the Search results and select Run as administrator.
5. In the Command Prompt window, type the following command:
6.  
7. reg add HKLM\SYSTEM\ControlSet001\Control\Bluetooth\Audio\AVRCP\CT /v DisableAbsoluteVolume /t REG_DWORD /d 1 /f
8.  
9. You may need to restart Windows for the registry change to take effect.
10.  
11. Note
12.  
13. To re-enable the Absolute Volume feature, type the following command in the Command Prompt window:
14.  
15. reg add HKLM\SYSTEM\ControlSet001\Control\Bluetooth\Audio\AVRCP\CT /v DisableAbsoluteVolume /t REG_DWORD /d 0 /f