[This is preliminary documentation and subject to change]

# Installing IIS

Internet Information Services is installed on Windows Whistler Server by default. You can remove IIS or select additional components by using the Add/Remove Programs application in Control Panel. To start using IIS, see Quick Site Setup with IIS and IIS snap-in.

Important Running IIS on a Primary Domain Controller (PDC) or Backup Domain Controller (BDC) severely degrades the performance of IIS because of the networking and processor load imposed by authentication and other domain controller processes. In addition, adding users to a group that can log on locally reduces the security of the domain controller.

###### To install IIS, add components, or remove components

For a detailed description of the IIS optional components, see Installing IIS Optional Components.

1. Click Start, click Control Panel, and double-click Add/Remove Programs. The Add/Remove Programs application starts.
2. In the left column of the Add/Remove Programs dialog box, click Add/Remove Windows Components.
3. When the Windows Components Wizard appears, click Next.
4. In the Windows Components list, select IIS.
5. Click Next, and follow the instructions.

###### Directories remaining after uninstall

The following directories, which contain user content, remain on your computer after you uninstall IIS:

- \Inetpub
- \systemroot\Help\IisHelp
- \systemroot\System32\Inetsrv

Related Topics

- For more information on related topics such as the IIS software checklist, security checklist, or troubleshooting, see the Windows documentation by clicking Help from the Start menu.
- To find answers to frequently asked questions about IIS, see Frequently Asked Questions.

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