Wordpress "HTTP error" during large image upload

Asked by:
laserbeameyes / 11 Points
2013-06-27 4:18 am EST
I am suddenly experiencing an "HTTP error" after attempting to upload large images to Wordpress. Smaller images seem to upload fine.

I've tried increasing memory and upload limits in php.ini and wp-config files, but haven't had any luck.

I wasn't experiencing this problem earlier and suddenly I can't upload even the same images that were successfully uploaded just a few hours ago.

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11,975 Points
2013-06-27 10:18 am EST
Hello laserbeameyes,

Thank you for your question. We are happy to help, but will need more information to provide a specific answer.

Could you please reply with more information, such as the full error message, the browser and version you are using, any specific plugins you are using, and version of Wordpress you are running.

It may also be helpful to put Wordpress in debugging mode, since it logs full error messages.

If you have any further questions, feel free to post them below.
Thank you,


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The exact error message is "HTTP error"; that's all that is displayed in the WP admin from the media uploader.

I have experienced this in Chrome, Firefox and Safari on OSX.

I have disabled all plug-ins and reverted to the default theme and still experience this problem.

I am running WordPress version 3.5.2.

I have enabled debugging, but am unsure how or where this will show any more details of the error I'm receiving on the admin side.

Thank you,

- Andrew
11 Points

2013-06-27 11:19 am EST
I am having the exact same problem. Large image uploads suddenly fail in WordPress for all my sites. It appears that Mod_security is blocking the uploads, it is also blocking an ajax Get request to jquery.cookie.js on the post edit page.

I fixed this by disabling mod_security but that is not a long term solution. Does any at WHH know how to configure Modsec so it works with WordPress?
3 Points

2013-06-27 3:26 pm EST
Disabling mod_security did not work for me.
11 Points

2013-06-27 9:09 pm EST
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