2.7 with concentric hosting (XO communications)

I use XO and I needed to solve the problem with a new plugin. Create a file called:

disable-canonical-redirects.php

With the contents such:

<?php
/*
Plugin Name: Disable Canonical URL Redirection
Description: Disables the "Canonical URL Redirect" features of WordPress 2.3 and above.
Version: 1.0
Author: Mark Jaquith
Author URI: http://markjaquith.com/
*/

remove_filter('template_redirect', 'redirect_canonical');

?>

Install 2.7 via ftp. Add this new file to the plugins directory and activate it.

(WooT! Thanks to MichaelH and the creator of this script, Mark Jaquith, and to mrmist for the post!)

CGProg is telling you that you likely need that plugin if you install WordPress at XO.

Just copy and paste that block into a Notepad file and save as disable-canonical.php.

Then upload that to your wp-content/plugins folder and activate the plugin.

Resources:
Managing Plugins – read how to install plugins
Installing WordPress
Uploading WordPress to a remote host

What if you’re having the above problems, but can’t even get to the admin? Login doesn’t work; and then one gets the dreaded “redirect loop” error too.

I’ve never had so many problems as I’ve had with XO.

I have been fighting with a wordpress install on their servers all day! Thank you sooooooo much for that plugin!

A little research has taught me this:

The Web server (running the Web site) does not understand or does not support the HTTP method it finds in the HTTP data stream sent to it by the client (e.g. a Web browser or our CheckUpDown robot). The methods defined by the HTTP protocol are as follows:

* POST: Submit data to the Web server such as 1) post a message to a bulletin board, newsgroup or mailing list, 2) provide input data – typically from a CGI form – to a data-handling process, 3) add a record directly to a database.

Fixing 501 errors – general

This error should be very rare in any Web browser. It is more likely if the client is not a Web browser – particularly if the Web server is old. In either case if the client has specified a valid request type, then the Web server is either responding incorrectly or simply needs to be upgraded.

So is XO running some ancient servers? That makes sense with the ancient management tools they have. Has anyone installed successfully on XO? I don’t want to use the auto install (for version 2.2!) because I want it in a subdirectory and not all spread out in the main dir. Arg!

It’s probably your end. First, clear your cache, cookies and history, and restart. And if you’re using IE, see Error Message: Error 501/505: Not Implemented or Not Supported to check an IE setting.