The Problem: A Sudden Drop to 404<\/h2>\n
Everything was running smoothly until one Monday morning when I tried to access my WordPress blog and was greeted with a 404 error on every page \u2014 aside from the homepage, which loaded just fine. Immediately, I suspected a plugin or theme issue, but disabling them did nothing. Accessing individual posts, pages, categories, and even admin functions resulted in dreaded 404 \u201cNot Found\u201d errors.<\/p>\n
At the same time, my hosting provider had sent out a nonchalant message a few days prior notifying that my site had been migrated to a newer LiteSpeed-based infrastructure as part of a server hardware upgrade. They mentioned improved performance, HTTP\/3 support, and better cache handling \u2014 all features I was genuinely excited about.<\/p>\n
However, there was one line buried near the end: \u201cNote: Users self-managing .htaccess files may wish to verify Rewrite configurations.\u201d<\/em> Too late, I now realized that cryptic sentence should\u2019ve been in bold, blinking red letters<\/strong>.<\/p>\n LiteSpeed is a high-performance web server compatible with Apache\u2019s mod_rewrite rules. In theory, it should respect the same .htaccess configurations WordPress has always used. However, in practice, there are subtle differences, especially when it comes to:<\/p>\n What tripped up my site wasn\u2019t the core functionality of LiteSpeed, but how the migration introduced variables that messed up my previously functional rewrite rules. Put simply, LiteSpeed was technically<\/em> reading my .htaccess file \u2014 but not interpreting the rewrites correctly given its environment and caching edge-cases.<\/p>\n I first looked at the standard WordPress .htaccess file, which looked like this:<\/p>\n On Apache, this consistently handled clean URLs. On LiteSpeed, however, it simply returned 404s \u2014 even though the rewrite module wasn\u2019t throwing errors. The issue? In some cases, LiteSpeed doesn\u2019t respect WordPress-style .htaccess rules<\/em> unless the server environment has:<\/p>\n It also didn\u2019t help that my new host had CloudLinux with jailed shells. That added constraints to how symlinks and user directories were resolved, interfering further with permalinks.<\/p>\n What eventually worked was updating the .htaccess to simplify and explicitly define rules for all permalinks, making them more LiteSpeed-friendly. I modified my existing .htaccess like so:<\/p>\n The key differences here:<\/p>\n After updating the .htaccess, I logged in (through the direct wp-login.php path, which fortunately worked) and flushed the permalinks in WordPress:<\/p>\n This forced WordPress to regenerate rewrite rules, and in conjunction with the new .htaccess, it brought the permalinks back to life across the site. No more 404s, no lost SEO traffic, and no angry emails from visitors \u2014 crisis averted.<\/p>\n This experience taught me several important lessons for managing WordPress in evolving hosting environments:<\/p>\n![\"\"](\"https:\/\/savethevideo.net\/blog\/wp-content\/uploads\/2025\/11\/icon-plugin-settings-wordpress-dashboard-whitelist-rules.jpg\"){kind=icon}
\nUnderstanding LiteSpeed vs Apache<\/h2>\n
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The Smoking Gun: .htaccess Errors<\/h2>\n
\n<IfModule mod_rewrite.c>\nRewriteEngine On\nRewriteBase \/\nRewriteRule ^index\\.php$ - [L]\nRewriteCond %{REQUEST_FILENAME} !-f\nRewriteCond %{REQUEST_FILENAME} !-d\nRewriteRule . \/index.php [L]\n<\/IfModule>\n<\/pre>\n\n
Fixing It: The Rewrite Rule Adjustment That Saved the Day<\/h2>\n
\nRewriteEngine On\nRewriteBase \/\nRewriteRule ^index\\.php$ - [L]\nRewriteCond %{REQUEST_URI} !^\/index\\.php\nRewriteCond %{REQUEST_FILENAME} !-f\nRewriteCond %{REQUEST_FILENAME} !-d\nRewriteRule . \/index.php [QSA,L]\n<\/pre>\n\n
![\"\"](\"https:\/\/savethevideo.net\/blog\/wp-content\/uploads\/2025\/11\/a-close-up-of-a-computer-screen-with-code-on-it-api-developer-debugging-code-comparison-logs-inspection.jpg\")
\nFlush Permalinks: Final Step<\/h2>\n
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Lessons Learned<\/h2>\n