AD Group Manager Web runs on IIS (Internet Information Services). If IIS is not already enabled on your Windows Server, follow these steps.
Open Server Manager — press the Windows key and type “Server Manager”. Click the application that appears in the search results.
Add Roles and Features — in the Server Manager dashboard, click Add Roles and Features to launch the wizard.
Select installation type — choose Role-based or feature-based installation and click Next.
Select destination server — choose the server you want to install IIS on. If you’re on a single server, it will be pre-selected. Click Next.
Select server roles — scroll down and check the box next to Web Server (IIS). A dialog will appear listing required features — click Add Features to include them, then click Next.
Select features — no additional features are needed for a basic IIS setup. Click Next.
Web Server Role (IIS) information — read the informational page and click Next.
Role services — the default selection is sufficient for AD Group Manager Web. You can add or remove role services according to your needs. Click Next.
Confirmation — review your selections and click Install. The installation may take several minutes.
Wait for completion — monitor the progress. Once complete, click Close.
Verify IIS — open a browser and navigate to http://localhost. You should see the default IIS welcome page, confirming that IIS is installed and running.
If you plan to use Windows Authentication (Kerberos), you also need to enable the Windows Authentication role service. You can do this during the role services step above, or add it later through Server Manager → Manage → Add Roles and Features → navigate to Web Server (IIS) → Web Server → Security → check Windows Authentication.