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edited Apr 13, 2017 at 12:37

Here's a systematic way to troubleshoot this, from user asbjornu in How to eliminate weird 404 errors in wp-admin?How to eliminate weird 404 errors in wp-admin?

The only way to debug this is to disable one plugin at a time, each time trying to reproduce the problem before you disable another plugin. Start with the plugins that have anything to do with the administration of WP, then move down to regular theme plugins, widgets and such.

Inspect the "Not Found" page that you are served better (browse with Opera and open the Info panel which will show you the headers, alternatively browse with Firefox and have Firebug with the "Net" panel enabled) and do a search through all of your plugins to see if they might be serving it directly. If not, take a look at the log of the web server to find out what exact resource it's unable to serve; a plugin might be doing some fancy redirecting or rewriting so it's not necessarily the URL you see in your browser that's causing the 404.

Here's a systematic way to troubleshoot this, from user asbjornu in How to eliminate weird 404 errors in wp-admin?

The only way to debug this is to disable one plugin at a time, each time trying to reproduce the problem before you disable another plugin. Start with the plugins that have anything to do with the administration of WP, then move down to regular theme plugins, widgets and such.

Inspect the "Not Found" page that you are served better (browse with Opera and open the Info panel which will show you the headers, alternatively browse with Firefox and have Firebug with the "Net" panel enabled) and do a search through all of your plugins to see if they might be serving it directly. If not, take a look at the log of the web server to find out what exact resource it's unable to serve; a plugin might be doing some fancy redirecting or rewriting so it's not necessarily the URL you see in your browser that's causing the 404.

Here's a systematic way to troubleshoot this, from user asbjornu in How to eliminate weird 404 errors in wp-admin?

The only way to debug this is to disable one plugin at a time, each time trying to reproduce the problem before you disable another plugin. Start with the plugins that have anything to do with the administration of WP, then move down to regular theme plugins, widgets and such.

Inspect the "Not Found" page that you are served better (browse with Opera and open the Info panel which will show you the headers, alternatively browse with Firefox and have Firebug with the "Net" panel enabled) and do a search through all of your plugins to see if they might be serving it directly. If not, take a look at the log of the web server to find out what exact resource it's unable to serve; a plugin might be doing some fancy redirecting or rewriting so it's not necessarily the URL you see in your browser that's causing the 404.

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created Aug 27, 2011 at 6:19

supertrue

Here's a systematic way to troubleshoot this, from user asbjornu in How to eliminate weird 404 errors in wp-admin?

The only way to debug this is to disable one plugin at a time, each time trying to reproduce the problem before you disable another plugin. Start with the plugins that have anything to do with the administration of WP, then move down to regular theme plugins, widgets and such.

Inspect the "Not Found" page that you are served better (browse with Opera and open the Info panel which will show you the headers, alternatively browse with Firefox and have Firebug with the "Net" panel enabled) and do a search through all of your plugins to see if they might be serving it directly. If not, take a look at the log of the web server to find out what exact resource it's unable to serve; a plugin might be doing some fancy redirecting or rewriting so it's not necessarily the URL you see in your browser that's causing the 404.