Title: update-core.php throws 404
Last modified: August 24, 2016

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# update-core.php throws 404

 *  [Acadia](https://wordpress.org/support/users/acadia/)
 * (@acadia)
 * [11 years ago](https://wordpress.org/support/topic/update-corephp-throws-404/)
 * Since updating to 4.2, I am getting a 404 when I try to update my theme and Jetpack(
   on update-core.php). Strangely, updating the themes that came from wordpress,
   twenty-fifteen, etc. there were no issues. I looked at a bunch of different threads
   but they were either old or had too many options in them. Please advise.

Viewing 1 replies (of 1 total)

 *  [greuve](https://wordpress.org/support/users/greuve/)
 * (@greuve)
 * [11 years ago](https://wordpress.org/support/topic/update-corephp-throws-404/#post-6061850)
 * I had a similar problem today (page not found on update-core.php) trying to auto-
   install 4.2.1 using Firefox. Switching to Chromium (I use Ubuntu) solved it for
   me. Note that before the switch I also deactivated all WP plugins. Also note 
   that my Firefox is loaded with many add-ons, while my Chromium is completely 
   bare.
 * HTH,
    Ger

Viewing 1 replies (of 1 total)

The topic ‘update-core.php throws 404’ is closed to new replies.

## Tags

 * [update-core.php](https://wordpress.org/support/topic-tag/update-core-php/)

 * In: [Fixing WordPress](https://wordpress.org/support/forum/how-to-and-troubleshooting/)
 * 1 reply
 * 2 participants
 * Last reply from: [greuve](https://wordpress.org/support/users/greuve/)
 * Last activity: [11 years ago](https://wordpress.org/support/topic/update-corephp-throws-404/#post-6061850)
 * Status: not resolved

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