For decades, the "golden trinity" of Windows admin tools—ADUC (Active Directory Users and Computers), GPMC, and DHCP—were only available on full-blown Windows Server. If you were on a Windows 10 or 11 workstation, you were flying blind.

Have a weird error where the install hangs at 90%? Drop your build number in the comments—it matters.

If you want the "new" (ADAC)—which has search filters and a PowerShell history pane—install the RSAT feature named Active Directory Administrative Center . It is a separate optional feature.

Get-WindowsCapability -Name "Rsat*" -Online | Add-WindowsCapability -Online Pro-tip: The ~~~~0.0.1.0 is not a version number. It is a separator syntax required by the Windows Package Manager. You installed ADUC. You launch it. It opens, but when you try to connect to your domain, you get: "Naming information cannot be located because: The specified domain either does not exist or could not be contacted." The Fix: Your Windows 11 machine is not domain-joined, OR you are connected to a VPN that does not route global catalog traffic.