Windows 10 and Windows 11 have Dolby Atmos built into the operating system. You don’t need to pay to decode Atmos content.
The most legitimate way to get Dolby Atmos is through the Microsoft Store. While the app itself is a paid product, there is a trick to access the core features for free if you have specific hardware. dolby atmos free for pc
If you have ever purchased the Dolby Atmos for Headphones license on an Xbox console using your Microsoft account, . Log into the Dolby Access app with the same Microsoft account, and it will unlock automatically. Windows 10 and Windows 11 have Dolby Atmos