: You must be signed in with an Administrator account .
Don't install the old Remote Server Administration Tools (RSAT) via an MSI. Use the modern Features on Demand (FOD) method via Settings or PowerShell. install aduc windows 11
: A connection is required to download the features from Microsoft's servers, unless you are using an offline installation method. Method 1: Using Windows 11 Settings (Recommended) : You must be signed in with an Administrator account