Install Drupal on IIS

by Ruslan Yakushev


Drupal is a free, open-source content management system (CMS) software that lets individuals or communities of users easily publish, manage, and organize a wide variety of content on a Web site.

For more information about Drupal, visit the Drupal Web site.

This article describes how to install and configure Drupal for use with the FastCGI extension on Internet Information Services 7 (IIS 7) and above on Windows® Web Server 2008. The instructions assume that you have set up and configured the FastCGI extension and the PHP libraries. The instructions have been tested and found to work with the following software versions:

  • PHP 5.2.9
  • MySQL 5.1.34
  • Drupal 6.14


From the base default configuration file provided by PHP, modify the following lines in your Php.ini configuration:

  • Define extension\_dir as c:\php\ext (for example, the location of your PHP extensions directory).
  • Uncomment extension=php\_mysql.dll in the extensions list to enable MySQL support.

In order for Drupal to work correctly with IIS 7 and above, it is necessary to install an update for the IIS FastCGI module for IIS 7.

Download and Unpack the Application

First, download the latest stable release of Drupal. For this article, Drupal version 6.14 was used (future versions are likely to be similar to install). Uncompress the Drupal files and copy them to C:\Inetpub\wwwroot\drupal (or another directory of your choosing).

Before running the Drupal installer, create the configuration file Settings.php, which Drupal uses to store key configuration settings. Assign write permissions to it with the command (from the installation directory):

  1. Copy the .\sites\default\default.settings.php file to .\sites\default\settings.php.

  2. Grant "write" permissions to the file.

    C:\inetpub\wwwroot\Drupal\sites\default>icacls settings.php /grant BUILTIN\IIS_IUSRS:(W)
  3. The installer will modify the Settings.php file with information provided during the installation process.

  4. Check to ensure that the file permissions are set back to "read only" once the installation is complete. If the file permissions did not change back, you must change them manually with the command:

    C:\inetpub\wwwroot\Drupal>icacls sites\default\settings.php /reset
  5. Drupal uses the Sites\Default\Files directory to store temporary files and therefore must be able to write and modify files in this folder.

  6. Create the folder:

    C:\inetpub\wwwroot\Drupal>md sites\default\files
  7. Grant "modify" permissions to the folder:

    C:\inetpub\wwwroot\Drupal>icacls sites\default\files /grant BUILTIN\IIS_IUSRS:(OI)(CI)(M)

Set Up the Database

Before starting the installation procedure for Drupal, you must create a database on your server. Also create a user and grant this user "db ownership" permission to the database. This article uses the following database information:

  • Database name: drupal
  • Database user: drupal
  • Account password: drupal

Run the Installation Script

  1. Open a Web browser, and go to http://localhost/drupal/. The first page of the installation script appears. Click Install Drupal in English. The Verify requirements step should proceed automatically unless you are missing requirements.

    Screenshot of a browser window with the Drupal language page in a tab.
    Figure 1: Choose language page

  2. On the Database configuration page, type the following information:

    • Database name: drupal

    • User name: drupal

    • Password: drupal

      Click Save and continue. The required database tables are created, and the configuration is saved into the Sites\Default\Settings.php file. Remove the "modify" permissions on this file.

      Screenshot of a browser window showing the Drupal database configuration page.
      Figure 2: Database configuration page

  3. On the Configure site page, enter the required configuration information.

    Screenshot of a browser window showing the Drupal Configure site page.
    Figure 3: Configure site page

Enable Clean URLs

By default, Drupal uses query string parameters for all the URLs it generates for your Web site. With the URL Rewrite Module, however, you can create "clean URLs."

IIS 6.0 does not have URL rewriting capabilities, so you can use a third-party URL rewriting product such as ISAPI Rewrite or Ionics ISAPI Rewrite Filter.

IIS 7 and above have URL rewriting support, which can be enabled by installing the URL Rewrite Module.

The following instructions describe how the URL Rewrite Module for IIS 7 and above can be used to enable clean URLs in Drupal.

  1. Open the Web.config file located in C:\inetpub\wwwroot\drupal folder. If you do not have a Web.config file in the drupal directory, create it.

  2. Copy and paste the following XML code into this file.

    <?xml version="1.0" encoding="UTF-8"?>
                        <rule name="Drupal Clean URLs" stopProcessing="true">
                            <match url="^(.*)$" />
                                <add input="{REQUEST_FILENAME}" matchType="IsFile" negate="true" />
                                <add input="{REQUEST_FILENAME}" matchType="IsDirectory" negate="true" />
                            <action type="Rewrite" url="index.php?q={R:1}" appendQueryString="true" />
  3. Save the web.config file.

  4. Open a Web browser, and go to http://localhost/Drupal/index.php?q=admin/settings/clean-urls.
    Screenshot of a browser window showing the Clean U R L  page.
    Figure 4: Clean URLs page

  5. Under Clean URLs, select the Enabled option button, and then click Save configuration. If you successfully changed the URL format, all the URLs are represented in a hierarchical form that does not use query string parameters (for example, http://localhost/Drupal/admin/settings/clean-urls).


This article updates: " Drupal on IIS" by Ruslan Yakushev, published on September 19, 2008.