Windows 10: Bluetooth headset works but i can't use Windows volume to control it

Hi,

I have a Sony Gold Wireless headset and it works perfectly fine, the only issue is that the windows volume Control (the slide in the task bark) doesn't affect it at all. So in order to change the volume i have to either use the built-in buttons of the headset, or whatever software am currently using, this is not a critical issue but am very used to the volume buttons i have in the keyboard (specially the "Mute" button).

What i tried so far :
Making it the default playback device :





Enabling bluetooth services :





I also tried using the "troubleshoot tool" and updating the driver, nothing solved this issue, because like i said, the headset is playing Sound correctly, its just that somehow it overwrite windows sound control or something.
I also did some comparison with my Razer headset and i noticed something a bit weird,

In my other Windows-10 pc, when playing AC/DC - Highway to hell solo on full volume, the playback device volume bars looks like this :




Playing the exact same song from the exact same source (Spotify) with full volume and also with the Razer headset, the volume bars don't get passed "4-5 bars" even thought that in my ears it's as loud as the other computer :




And for the sony Headset, it shows the same result in the "bad" and "good" PC (can't pass 4-5 bars)




I have no idea if this can help or even if it has any meaning but I just noticed that its kinda weird, even when i use the speakers the volume bars are always limited to "4-5 bars".

But again, my main issue is that i want this slider to work :




Cause even that its set to Mute, Windows is still doing a tons of Sound.


Edit :

Another thing that i forgot, using the volume mixer has some strange results too, changing the volume of an individual software works perfectly, in this screenshot





I was able to reduce Spotify volume to ~30%.

Then i took it back to match main system volume (100%) and then reduced the whole System volume




and as always, absolutely no effect, even when its muted.


Thank you

:)

 

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It is just a feature which is based on a logic that if one is pairing a Bluetooth headset would obviously not hold the phone as the purpose of using Bluetooth is mainly to avoid that. The technical reason is, that Bluetooth does not only relays the sound but
also the access to Volume controls that your Bluetooth Headset supports. So, if you some day purchase and pair a Bluetooth Headset with no Volume controls, your phone controls would remain active. Addressing to the problem that you mentioned about the high
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bump...

My main headset (razer) got broken today, and am gonna have to use the Sony wireless one, can anyone please help here ?