Title: NOAUTH errors in WP error log Last modified: March 9, 2026 --- # NOAUTH errors in WP error log * Resolved [grl570810](https://wordpress.org/support/users/grl570810/) * (@grl570810) * [3 months ago](https://wordpress.org/support/topic/noauth-errors-in-wp-error-log/) * I apologise if this is the wrong place to post as I doubt there’s an error in the plugin but hope the solution is so obvious I won’t be wasting much of your time… * I am attempting to implement a redis cache on my WorPress sites (specifically those running WooCommerce). The server is running nginx & mariadb, csf firewall& the website is using Divi as the theme and has Wordfence running. I have installed Redis server - It’s bound only to localhost: bind 127.0.0.1 -::1 - It’s got protected mode on: protected-mode yes - and has require password set requirepass ******************* * I can connect to it with redis-cli using AUTH and it responds to ping with PONG * In the csf firewall there is no entry for the redis port (left at default 6379), in other words I am confident there is no possibility of remote bad guys issuing direct calls to redis. TCP_IN = “20,21,22,25,53,853,80,123,443,10000,22222,49900: 49999” * In the WordPress site I have the password in the wp-config file: define( ‘WP_REDIS_PREFIX’,‘ .net.au:’ );define( ‘WP_REDIS_DISABLE_BANNERS’, true );define(‘WP_REDIS_PASSWORD’,‘**********);( I have double-triple checked, the password matches!) * The Redis Object Cache plugin is installed, it shows the cache as operational: * ![](https://i0.wp.com/repository.epicsites.com.au/Redis_OC.png?ssl=1) * The diagnostics look OK to me: * [https://repository.epicsites.com.au/Redis_OC_Diags.txt](https://repository.epicsites.com.au/Redis_OC_Diags.txt) * and the Redis Object Cache in the dashboard is reporting sensible looking activity: * ![](https://i0.wp.com/repository.epicsites.com.au/Redis_OC_Tab.png?ssl=1) * Here’s the problem: every time I browse the site I get heaps of errors in the log: * redis sent invalid response: “-NOAUTH Authentication required.” while reading response header from upstream client:111.111.111.111, server: xxxx.net.au, request:“ GET / HTTP/2.0”, subrequest: “/redis-fetch”, upstream: “redis://127.0.0.1:6379”, host: xxxx.net.au (the IP address matches the public IP of my home office, so I know these are genuine attempts to access redis via the website.) * I’m at a complete loss, what have I done wrong that causes requests to be sent to redis without passing the AUTH password? I’ve googled a lot and found nothing helpful, I’m hoping you can spare the time to look at this. Thanks, Graham * The page I need help with: _[[log in](https://login.wordpress.org/?redirect_to=https%3A%2F%2Fwordpress.org%2Fsupport%2Ftopic%2Fnoauth-errors-in-wp-error-log%2F%3Foutput_format%3Dmd&locale=en_US) to see the link]_ Viewing 4 replies - 1 through 4 (of 4 total) * Plugin Author [Till Krüss](https://wordpress.org/support/users/tillkruess/) * (@tillkruess) * [3 months ago](https://wordpress.org/support/topic/noauth-errors-in-wp-error-log/#post-18845552) * Is this running on a single machine? No scaling or containers, in that case it could be your Opcache caching the `wp-config.php` file too aggressively. * Thread Starter [grl570810](https://wordpress.org/support/users/grl570810/) * (@grl570810) * [3 months ago](https://wordpress.org/support/topic/noauth-errors-in-wp-error-log/#post-18845985) * Thanks for the suggestion. Yes, it’s a standalone VPS server. I have added the wp-config.php file to the opcache blacklist, restarted php-fpm service, and unfortunately that’s made no difference. * Any other ideas? Is there any way I can improve the logging to give me a better picture of what’s going on? * Plugin Author [Till Krüss](https://wordpress.org/support/users/tillkruess/) * (@tillkruess) * [3 months ago](https://wordpress.org/support/topic/noauth-errors-in-wp-error-log/#post-18847073) * The error `NOAUTH Authentication required` means that Redis wasn’t given a password, nothing else would trigger it. * Make sure `WP_REDIS_PASSWORD` is set at the top of the configuration file. * Otherwise disable the password, since it’s local anyhow. * Thread Starter [grl570810](https://wordpress.org/support/users/grl570810/) * (@grl570810) * [2 months, 4 weeks ago](https://wordpress.org/support/topic/noauth-errors-in-wp-error-log/#post-18850154) * Unfortunately relocating the WP_REDIS_PASSWORD (& all the other WP_REDIS… define statements) to the top didn’t work either. Very weird. * Although it pains me I have disabled the requirement for a password, I have at the same time changed the port to at least give me a bit more security. * I’ll continue to try and work out the problem, and will update here if I find it, as that may be of use to others. Thanks Till for your assistance. Viewing 4 replies - 1 through 4 (of 4 total) You must be [logged in](https://login.wordpress.org/?redirect_to=https%3A%2F%2Fwordpress.org%2Fsupport%2Ftopic%2Fnoauth-errors-in-wp-error-log%2F%3Foutput_format%3Dmd&locale=en_US) to reply to this topic. * ![](https://ps.w.org/redis-cache/assets/icon-256x256.gif?rev=2568513) * [Redis Object Cache](https://wordpress.org/plugins/redis-cache/) * [Support Threads](https://wordpress.org/support/plugin/redis-cache/) * [Active Topics](https://wordpress.org/support/plugin/redis-cache/active/) * [Unresolved Topics](https://wordpress.org/support/plugin/redis-cache/unresolved/) * [Reviews](https://wordpress.org/support/plugin/redis-cache/reviews/) * 4 replies * 2 participants * Last reply from: [grl570810](https://wordpress.org/support/users/grl570810/) * Last activity: [2 months, 4 weeks ago](https://wordpress.org/support/topic/noauth-errors-in-wp-error-log/#post-18850154) * Status: resolved