Clean URLs on IIS

The best method to get clean URLs on IIS depends on which version of IIS you are using. Here are some version-specific resources.

Drupal.org documentation

• Installation Guide | Clean URLS on IIS

IIS5

If you are running Windows 2000 with IIS 5 or Windows XP with IIS 5.1, you can use Helicon's ISAPI_Rewrite 3 (there's a free "lite" and a pay version) or Micronovae's IIS Mod-Rewrite (the "standard" version works w/IIS5). IIS Aid has an article on configuring the Helicon module. You can find Mod-Rewrite documentation on Micronovae's site.

Here is an older comparison of the modules. There is also an important note about .htaccess filess with ISAPI_Rewrite 3 here.

IIS6

• On Windows Server 2003/IIS 6.0, you can use Helicon's ISAPI_Rewrite 3 or Micronovae's Mod-Rewrite standard and Pro versions.
• On Windows Server 2003/IIS 6.0, the Ionic Isapi Rewrite Filter is a small, free URL rewriting ISAPI filter.

IIS7

• For IIS7 Microsoft introduced its own URL Rewrite module (x86/x64) Note: Service Pack 2 for Windows Server 2008 & Vista contained some important IIS7 bug fixes (KB954946) that affect how REQUEST_URI works. You can download the patch individually or SP2 from the MS website.
• IIS7 URL Rewrite Home, contains useful explanations and links, including a walkthrough video.
• Using URL Rewrite Module
• IIS 7.0 Url Rewriter gotchas when importing mod_rewrite rules - Mike Volodarsky
• 500.50 (URL rewrite) error when viewing images on IIS 7.0 - explanation and solution here.

Have suggestions for more? Feel free to add yours.