Why? Because a raw .dll file—especially one signed by Microsoft—is not a product you "download" from a third party. It’s a component of a system . Microsoft doesn't sell DLLs at a digital convenience store. Here is the ironic, beautiful truth: You already own this file. It’s on your network. You just have to stop treating Windows like an iPhone and start treating it like the modular operating system it is.
Add-WindowsCapability -Name Rsat.ActiveDirectory.DS-LDS.Tools~~~~0.0.1.0 -Online Unlike a random steam_api.dll for a cracked video game, Microsoft.ActiveDirectory.Management.dll is a trust boundary. It holds the code that talks to your domain controller—the brain of your company’s identity. It knows who is an admin, who can access the finance share, and who gets fired tomorrow. microsoft.activedirectory.management.dll download
"The term 'Get-ADUser' is not recognized..." Microsoft doesn't sell DLLs at a digital convenience store
Enable the Windows Feature. Install RSAT. Mount your Server ISO. That DLL is waiting for you, exactly where Microsoft left it—inside the official, signed, secure package of the operating system itself. You just have to stop treating Windows like
Install-WindowsFeature -Name RSAT-AD-PowerShell Or, for Windows 10/11: