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I receive the message:

Preview mode could not be disabled. Please run chmod 777 /wp-content/w3-total-cache-config-preview.php to make the configuration file write-able, then try again.

I have chmodded the file to 777 and the error message remains.

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closed as off-topic by Johannes Pille, birgire, Pieter Goosen, mrwweb, gmazzap Aug 30 '14 at 10:37

This question appears to be off-topic. The users who voted to close gave this specific reason:

  • "Your question should be specific to WordPress. Generic PHP/JS/HTML/CSS questions might be better asked at Stack Overflow or another appropriate site of the Stack Exchange network. Third party plugins and themes are off topic." – Johannes Pille, birgire, Pieter Goosen, mrwweb, gmazzap
If this question can be reworded to fit the rules in the help center, please edit the question.

Please rename that file to something like w3-total-cache-config-preview-backup.php, then please visit /wp-admin/admin.php?page=w3tc_general. The preview mode should have probably gone by now. – Pothi Jan 31 '13 at 15:18
@PothiKalimuthu: Thanks Pothi. Several other errors have been removed as a result. Add an answer and I will select it. – Steve Feb 1 '13 at 3:57
Glad to be of some help. I posted the answer with little explanation and use cases too. – Pothi Feb 1 '13 at 8:19
up vote 1 down vote accepted

W3 Total Cache plugin basically removes w3-total-cache-config-preview.php, when disabling the preview mode.

In /wp-content/ folder, please check if you have a file named w3-total-cache-config.php.

  • If it exists, please compare it with w3-total-cache-config-preview.php file.

    • If both have the same content, rename it to w3-total-cache-config-preview-backup.php and reload your site's /wp-admin/admin.php?page=w3tc_general.
    • If both have different content, please copy all the content from w3-total-cache-config-preview.php to w3-total-cache-config.php and then rename the preview file.
  • If it doesn't exist, please rename w3-total-cache-config-preview.php to w3-total-cache-config.php and then reload your site's /wp-admin/admin.php?page=w3tc_general.
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