This will affect the legacy Windows Media Player, Silverlight clients, Windows 7 and Windows 8. Microsoft does not specifically mention Windows 8.1 in this list so users still running the OS ...
Microsoft deprecates legacy DRM services on older Windows versions, like 7 and 8. Deprecation leads to playback restrictions ...
Per a recent update to Microsoft's Deprecated Windows features page, Legacy DRM services utilized by Windows Media Player and ...