Clicking Preview in Multisite Creates 404 Error

Since upgrading to Multi-Site, we’ve had an ongoing problem with individual blog owners being able to click on the Preview button to see how a draft item will appear before being published.

It seems this is specific to when network mode is enabled.

Upon further research, I found the following that clears up the problem:

go to the file template-loader.php in wp-include folder and comments the line number 7 which should be do_action(‘template_redirect’); so please make it like this

//do_action(‘template_redirect’);

and it will sort out preview post issue in multisite setup.

Indeed this does resolve the issue, however I HATE tweaking core files. I have searched within WordPress.org Forums and was unable to find this registered as a “bug” nor could I find an answer to the problem within the Forum, so I wanted to be sure it is logged here.

Thanks