[wp-trac] [WordPress Trac] #16639: Site inaccessible after upgrade to 3.1, due to endless canonical redirects

[WordPress Trac]

#16639: Site inaccessible after upgrade to 3.1, due to endless canonical redirects
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 Reporter:  knutsp        |      Owner:
     Type:  defect (bug)  |     Status:  new
 Priority:  normal        |  Milestone:  Awaiting Review
Component:  Canonical     |    Version:  3.1
 Severity:  major         |   Keywords:
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 I have two sites running on IIS6 with fastCGI. Both runs in a subfolder,
 like http://sparhell.no/knut/

 Both sites failed to display the front page, or any published post or
 archive after upgrading to 3.1. The browsers (any) complains that the site
 has a redirect loop. Unpublisged posts displays in preview mode.

 All plugins deactivated, the theme as Twenty Ten.

 I searched for help and found a plugin by Mark Jaquith that disables
 canoncal redirect by this:
 {{{
 remove_filter('template_redirect', 'redirect_canonical');
 }}}

 This worked immediately. I have upgraded ten other sites today with no
 such problem, on IIS7 and Linux, but none of them was residing in a
 subfolder. So I am not yet able to tell what triggers this behaviour,
 IIS6, subfolder or both.

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Ticket URL: <http://core.trac.wordpress.org/ticket/16639>
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