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Guides from the NOC

Written from running the hardware — what breaks, why, and the command that fixes it.

142 posts matching “troubleshooting” · Clear

VPS SELinux Blocking Nginx? Fix 403s Without Disabling It

SELinux blocking Nginx with 403 or Permission denied on your AlmaLinux VPS? Read the AVC denial, fix file contexts, booleans and ports the right way.

20 August 2026 · 7 min · 15 views
WordPress How to Enable WP_DEBUG and Actually Read the WordPress Log

Learn how to safely turn on WP_DEBUG in WordPress, find wp-content/debug.log, and decode fatal errors, warnings, and deprecation notices to fix issues fast.

19 August 2026 · 8 min · 7 views
WordPress Security Plugin Locked You Out of WordPress? Fix It Fast

Wordfence, Sucuri, or iThemes blocking your own login? Regain access via File Manager or SFTP, fix the firewall rule, and whitelist your IP for good.

18 August 2026 · 6 min · 14 views
Troubleshooting MySQL "Access Denied for User" in cPanel: Causes & Fix

Getting 'Access denied for user' connecting to MySQL in cPanel? Fix unlinked users, host mismatches, wrong username prefixes, and stale credentials fast.

18 August 2026 · 6 min · 22 views
WordPress WooCommerce Order Emails Not Sending? Here's the Real Fix

WooCommerce shows a new order but no confirmation email shows up? Fix stuck Action Scheduler jobs, SMTP conflicts, and cPanel deliverability issues fast.

18 August 2026 · 6 min · 10 views
WordPress Divi Builder Blank Page in WordPress: Causes and the Fix

Divi Builder stuck on a blank white screen or won't load in WordPress? Fix memory limits, cache conflicts, and blocked AJAX/REST calls step by step.

18 August 2026 · 6 min · 18 views
WordPress WordPress REST API CORS Error: Fix Cross-Origin wp-json Calls

Getting 'blocked by CORS policy' calling the WordPress REST API from a headless app? Fix wp-json cross-origin headers, preflight, and cookie issues.

18 August 2026 · 6 min · 17 views
WordPress WordPress Media Library Not Uploading Images? The Real Fix

Images stuck, HTTP error, or 'unable to create directory' in WordPress? Fix media upload failures with the real permission, memory, and disk causes.

17 August 2026 · 7 min · 27 views
WordPress Contact Form 7 Not Sending Email? Here's the Real Fix

Contact Form 7 shows 'message sent' but your inbox stays empty? Fix mail tag mismatches, bad headers, and silent delivery failures on WordPress for good.

17 August 2026 · 7 min · 15 views
Troubleshooting Composer Install Failing in cPanel: Memory & Timeout Fixes

Composer install failing on cPanel or a VPS? Fix memory exhaustion, proc_open blocks, timeouts, and missing SSH access with these tested steps.

13 August 2026 · 6 min · 17 views
Troubleshooting WooCommerce Cart & Checkout Blocks Broken? Here's the Fix

WooCommerce cart or checkout block showing a blank page or error after an update? Fix block registration, Store API, and shortcode fallback issues here.

11 August 2026 · 7 min · 13 views
Troubleshooting WooCommerce Slow? Fix a Bloated Action Scheduler Queue

WooCommerce site crawling to a halt? A bloated Action Scheduler queue is often the hidden cause. Learn how to diagnose, clear, and prevent it for good.

11 August 2026 · 5 min · 21 views
WordPress How to Edit wp-config.php Safely: Changes and Mistakes to Avoid

Learn which wp-config.php changes are safe—memory limit, debug mode, forced SSL, file editing—and the syntax mistakes that cause a WordPress white screen.

11 August 2026 · 6 min · 15 views
Troubleshooting WooCommerce Refund Not Received? Fix Stuck Gateway Refunds

WooCommerce shows 'Refunded' but the customer's card never gets the money? Here's why gateway refunds fail silently and exactly how to fix and prevent it.

11 August 2026 · 7 min · 13 views
WordPress WordPress Menu Not Showing? Fix It After a Theme Change

WordPress navigation menu disappeared after a theme change? Learn why menu locations break and how to fix it in minutes, on classic and block themes.

10 August 2026 · 6 min · 22 views
WordPress WordPress: 'One or More Database Tables Are Unavailable' Fix

Seeing 'One or more database tables are unavailable' in WordPress? Fix it with WP_ALLOW_REPAIR, wp-admin's repair tool, or WP-CLI — safely, no data loss.

8 August 2026 · 6 min · 14 views
cPanel cPanel Cron Jobs: Set Up, Schedule & Fix Silent Failures

Cron job in cPanel not running or failing silently? Fix PHP paths, CageFS limits, and email flooding, then add monitoring so failures never hide again.

7 August 2026 · 6 min · 13 views
WordPress Cloudflare Turnstile Not Working in WordPress? Here's the Fix

Cloudflare Turnstile widget missing or failing verification in WordPress? Fix domain, key, caching, and firewall issues causing it to break.

6 August 2026 · 10 min · 44 views
WordPress ACF Fields Not Saving in WordPress? Here's the Real Fix

Advanced Custom Fields values not saving or vanishing in WordPress? Learn the real causes — local JSON sync, capabilities, caching — and fix each one.

6 August 2026 · 7 min · 32 views
Troubleshooting Fatal Error: Allowed Memory Size Exhausted — The Real Fix

Seeing 'Fatal error: Allowed memory size exhausted' on your site? Learn why PHP hits its memory_limit and the right way to raise it in cPanel or WordPress.

5 August 2026 · 6 min · 20 views
Troubleshooting AI Crawlers Overloading Your Server? How to Block Them

AI bots like GPTBot, ClaudeBot, and Bytespider spiking your server load or bandwidth? Learn how to block them via robots.txt, .htaccess, or Cloudflare.

4 August 2026 · 6 min · 20 views
Troubleshooting Emails Delayed, Not Bounced? How Greylisting Works

Emails going out fine but arriving hours late with no bounce? Learn how SMTP greylisting works, how to confirm it in Exim logs, and how to fix it fast.

4 August 2026 · 6 min · 12 views
Troubleshooting 408 Request Timeout Error: Causes and How to Fix It

Getting a 408 Request Timeout during an upload or form submit? See why the client-side timeout trips in Nginx, Apache & Cloudflare, and how to fix it.

4 August 2026 · 6 min · 14 views
Troubleshooting Fix 'open_basedir Restriction in Effect' in cPanel & WordPress

PHP warning open_basedir restriction in effect blocking WordPress? Learn what causes it in cPanel and VPS hosting, and the exact fix for each case.

2 August 2026 · 5 min · 24 views