Spatial sound is not available on this device

So yeah i jave also tried everything and it never worked until i deleted my sound driver from my laptop and reinstalled i totally remover the files and reinstalled but make sure before you do so you have a source to reinstall the drivers after yo7 have deleted restart the pc and then you wont have sound ans when you reinstall drivers you will get the sound but sometimes you still may not have spatial sound so what you do is now restart pc ans the connect a headphone it takes sometime and then you have spatial sound in the device manager option 

I usually have to restart my pc most times if i need to enable spatial sound

Seems a lot of folks with this problem.. at least those that purchased the Dolby Atmos Plug in.

Perhaps it is being part of the group that gets 'early' builds, but this hasn't work for some time and now there is a new 'future' option of DTS Sound Unbound -which isn't available but appears to be yet another plug in that will be sold.

Hopefully someone will resolve the Dolby Atmos Surround issue (yes up to date, yes old drivers and latest drivers tried, and yes Turn on 7.1 Surround Sound is grayed out).

Hello, I have read through all of the posts in this problem thread as of January 1, 2019, and I still can't enable Windows Spatial Sound. I have a Dell XPS 15 9550 laptop which is running on the latest version of Windows 10 (Windows 10, version 1809), and my current audio driver is Realtek High Definition Audio. Originally, my audio driver was Realtek Audio, and while I had this driver, I updated to all of the latest versions of the driver and Windows itself, following through with all of the necessary restarts. However, this still didn't work, and after looking through some suggestions, it seemed as if users with Realtek High Definition Audio had greater odds of success. I installed Realtek High Definition Audio in spite of it not being the most up-to-date according to Microsoft but to no avail. Furthermore, I have mono disabled, and I already tried @Deepak kehal's suggestion of turning off the "Let Apps Use My Microphone" setting andfor Other Devices as well.

I do not have Dolby Atmos or DTS Sound Unbound. I only ever use my headphones or my laptop's default built-in speakers. In the "Manage Audio Devices" tab in settings, there are only three total devices: one output device which is Headphones/Speakers (Realtek High Definition Audio), one input device which is the Microphone (also Realtek High Definition Audio), and finally, Stereo Mix, which is disabled (RHDA). For Headphones/Speakers, I have disabled absolutely all Enhancements in the Sound Settings from the Control Panel. Just so you know, this is what it looks like when I try to enable Spatial Sound:

Just in case this information is important, I'm currently using the Steelseries Arctis 3 headset, which uses a 3.5 mm headphone jack, which used tohave a surround sound software designed for these kinds of headphones but was discontinued as of recently. The software that was discontinued is called Steelseries 7.1 Surround Sound, and it specifically said that it was having compatibility issues with Windows 10 and Spatial Sound, hence the discontinuation.

I would really love to stop dealing with this problem and enjoy some sweet, free, non-third-party surround sound. Thank you very much in advance.

Exactly the same specs as mine. XPS 9550 and Arctis 3. Until now, windows sonic still greyed out. Not sure, it is windows or hardware issues..

Mine is grayed out when I use a USB headset with external sound processor. When I use my laptop's internal sound processor (direct 3.5mm jack), spatial sounds are enabled.