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I have just created a new Wordpress site (version 3.0.1) on a Windows 2003 server, but the 'Month and Time' permalink format does not work. It gives a 404 error when I use it. All of the other standard permalink formats work okay.

Please can you tell me what would be causing this issue?

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Check "Enable “Pretty Permalinks” section on this page if it can help learn.iis.net/page.aspx/280/install-wordpress-on-iis – metal-gear-solid Sep 5 '10 at 4:14
Can you add IIS to your question's title? Then this should be more helpful for other users as well. Thanks :) – hakre Sep 8 '10 at 12:39
Title edited :-) – Techboy Sep 8 '10 at 14:21
up vote 1 down vote accepted

The type of permalinks you write about are also called "Pretty Permalinks" and are a feature of Wordpress that has been designed for the Apache HTTP Server with Mod_Rewrite enabled. Every other server is at first incompatible to this and you should not use those pretty permalinks on those system unless you know what you are doing.

There are replacements for some rewrite rules available for other HTTP Servers like Lighty, NGINX (nginx Compatibility (Wordpress Plugin)) or as in you case IIS, which is already somehow supported by Wordpress because for a longer time there were two developers taking care of IIS specifically (IIRC it's the author of Enabling Pretty Permalinks in WordPress : URL Rewrite Module : Installing and Configuring IIS 7 : The Official Microsoft IIS Site).

Please ensure that you've checked the right docs about Pretty Permalinks and your specific server.

Alternatively switch to Apache HTTP.

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That worked - thank you! :-) – Techboy Sep 8 '10 at 12:26

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