WordPress Response Body too Large and Too many arguments in Request Errors

If you are receiving a response body too large error with WordPress it is a result of WordPress sending too large of a body and mod_security blocking this. There are a couple ways to correct this. The first is to increase the default response body limit in mod_security. When message bodies start becoming too large such as 2MBs+, backup your WordPress database and then empty the database table "wp_postmeta".

This can also affect "Too many arguments in request" errors in WordPress. Clearing "wp_postmeta" resolves this in our experience.

As always, we recommend having the latest stable version of WordPress as with any script installed. For WordPress, install a cache plugin such as WP Fastest Cache or W3 Total Cache to improve the performance of WordPress.

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