With each new version of Windows 10, Microsoft removes certain legacy features. With version 21H1, the cuts are few, but some are important.
“Each version of Windows 10 adds new features and functionality,” Microsoft notes on its humorously-titled Windows 10 features we’re no longer developing page. “Occasionally we also remove features and functionality, often because we’ve added a better option.”
Microsoft Edge. The legacy version of Microsoft Edge is no longer supported and is not included in Windows 10 version 21H1.
XDDM-based remote display driver. Microsoft has removed support for Windows 2000-era remote display drivers in this release. “Independent Software Vendors that use an XDDM-based remote display driver should plan a migration to the [newer] WDDM driver model,” Microsoft notes.
And the following features are now deprecated in Windows 10 version 21H1, meaning that they are no longer being actively updated and will likely be removed in a future release:
Personalization roaming. Roaming of Personalization settings—like wallpaper, slideshow, accent colors, and lock screen images—is no longer being developed and might be removed in a future release, Microsoft says. That seems rather incredible to me, but it’s this feature, which I think of as settings sync, was never really built out and is perhaps used by few people.
Windows Management Instrumentation Command Line (WMIC) tool. The WMIC tool has been superseded by Windows PowerShell for WMI. But this deprecation only applies to the command-line management tool, as WMI itself is not affected, Microsoft says.