Unable to log in to admin page: Cookies are blocked due to unexpected output

  • I’m having a real problem logging into my admin page – it just says “Error: Cookies are blocked due to unexpected output. For help, please see this documentation or try the support forums”… It also lists the below warnings – which suggests that the WP Super Cache plug in might be the problem. Via FTP I have tried renaming the plug ins folder (as suggested by other users), I have tried restoring an old back up version of site via FTP, I have re-installed latest version of WordPress via FTP, and I have updated Super Cache via FTP, but nothing works. I am not an advanced user so I am at a loss as what to do next. Thanks in advance for your help!
    Warnings:

    Warning: include_once(/home2/fanny/public_html/wp-content/plugins/wp-super-cache/wp-cache-phase1.php): failed to open stream: No such file or directory in /home1/fanny/public_html/wp-content/advanced-cache.php on line 22

    Warning: include_once(): Failed opening ‘/home2/fanny/public_html/wp-content/plugins/wp-super-cache/wp-cache-phase1.php’ for inclusion (include_path=’.:/opt/php70/lib/php’) in /home1/fanny/public_html/wp-content/advanced-cache.php on line 22

    Warning: include(/home2/fanny/public_html/wp-content/plugins/wp-super-cache/wp-cache-base.php): failed to open stream: No such file or directory in /home1/fanny/public_html/wp-content/plugins/wp-super-cache/wp-cache.php on line 95

    Warning: include(/home2/fanny/public_html/wp-content/plugins/wp-super-cache/wp-cache-base.php): failed to open stream: No such file or directory in /home1/fanny/public_html/wp-content/plugins/wp-super-cache/wp-cache.php on line 95

    Warning: include(): Failed opening ‘/home2/fanny/public_html/wp-content/plugins/wp-super-cache/wp-cache-base.php’ for inclusion (include_path=’.:/opt/php70/lib/php’) in /home1/fanny/public_html/wp-content/plugins/wp-super-cache/wp-cache.php on line 95

    Warning: include_once(/home2/fanny/public_html/wp-content/plugins/wp-super-cache/ossdl-cdn.php): failed to open stream: No such file or directory in /home1/fanny/public_html/wp-content/plugins/wp-super-cache/wp-cache.php on line 118

    Warning: include_once(): Failed opening ‘/home2/fanny/public_html/wp-content/plugins/wp-super-cache/ossdl-cdn.php’ for inclusion (include_path=’.:/opt/php70/lib/php’) in /home1/fanny/public_html/wp-content/plugins/wp-super-cache/wp-cache.php on line 118

    Warning: Cannot modify header information – headers already sent by (output started at /home1/fanny/public_html/wp-content/advanced-cache.php:22) in /home1/fanny/public_html/wp-login.php on line 504

    Warning: Cannot modify header information – headers already sent by (output started at /home1/fanny/public_html/wp-content/advanced-cache.php:22) in /home1/fanny/public_html/wp-login.php on line 520

    Warning: Cannot modify header information – headers already sent by (output started at /home1/fanny/public_html/wp-content/advanced-cache.php:22) in /home1/fanny/public_html/wp-includes/functions.php on line 6221

    The page I need help with: [log in to see the link]

Viewing 3 replies - 1 through 3 (of 3 total)

  • The first thing you should do is stop your webserver displaying warnings and errors to the website. That’s a HUGE security issue. I don’t know what sort of hosting you have but there’s probably a PHP or Webserver settings page where you can turn it off.

    Then go look at the file wp-config.php and find the line define('WP_CACHE', true); and remove it. That will stop WordPress trying to load advanced-cache.php.

    Try activating the plugin again.

    Thread Starter angelawilson2014

    (@angelawilson2014)

    Thank you. I’ve gone into file manager (via Hostgator cpanel) and deleted that line. It’s not working yet though – still coming up with same error msgs on log in page.
    How can i activate the plug in without being able to log into the dashboard? Is there a way I can do it via FTP or similar?

    P.S Thanks for letting me know about the security issue. I’ll need to contact Hostgator and ask them about this, not sure how to do it myself.

    You’re getting a slightly different error message now. I guess you tried to delete the plugin by deleting files in the wp-super-cache directory? You deleted the wrong one!

    You should delete the wp-content/plugins/wp-super-cache/ directory via FTP. That will get rid of the error messages. Then install the plugin again through the plugins page. Hopefully the error messages won’t show up again but you’ll know how to fix it next time.

Viewing 3 replies - 1 through 3 (of 3 total)
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