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Find .htaccess 500 errors, broken RewriteRule, HTTPS redirects, WordPress permalinks 404, 301 redirects, canonical host, clean URLs, CORS, Basic Auth, and access control issues on Apache and LiteSpeed in one place. Search for the error message or what you want to do to get to the right guide.
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AH00526: Syntax error in .htaccess
RewriteRule not working
ERR_TOO_MANY_REDIRECTS
WordPress permalink 404
No Access-Control-Allow-Origin header
401 Unauthorized
403 ForbiddenFind .htaccess 500 errors, broken RewriteRule, HTTPS redirects, WordPress permalinks 404, 301 redirects, canonical host, clean URLs, CORS, Basic Auth, and access control issues on Apache and LiteSpeed in one place. Search for the error message or what you want to do to get to the right guide.
Do not expect a `.htaccess` result without reserving the Apache, LiteSpeed, Plesk proxy or NGINX-only structure.
Back up the current file with the date; Find the directive and line in the Apache/LiteSpeed error log.
Do not change redirect, rewrite, header and access rules all at the same time.
Measure the status, Location, Content-Type and redirect number with curl and check the cache layers separately.
Do not make bulk changes to a live `.htaccess` file without a backup.
Meaning: Solve .htaccess caused 500 Internal Server Error with broken RewriteRule, invalid directive, PHP handler, AllowOverride, and Apache log checks.
Possible cause: Apache Configuration and Error Logs
Meaning: If .htaccess is not working and RewriteRule is not processing, check AllowOverride, mod_rewrite, file location, Apache-NGINX structure, rule order, and directory context.
Possible cause: AllowOverride and mod_rewrite
Meaning: Redirect from HTTP to HTTPS with .htaccess. Solve ERR_TOO_MANY_REDIRECTS, Cloudflare, reverse proxy, X-Forwarded-Proto, and SSL loop issues.
Possible cause: SSL, Proxy, and Redirect Loops
Meaning: If WordPress posts and pages return 404 errors, fix `.htaccess`, mod_rewrite, AllowOverride, permalinks, subdirectory installation, and plugin rules.
Possible cause: WordPress Rewrite Rules and Permalinks
Meaning: Redirect a single URL, folder, or entire domain with .htaccess. Manage query string, path protection, RedirectPermanent, RewriteRule, and redirect chains.
Possible cause: SEO-Friendly Permanent Redirects
Meaning: Redirect www to non-www or non-www to www with .htaccess. Prevent HTTPS, subdomain, proxy, and redirect loop issues.
Possible cause: Canonical Host and Domain Standard
Meaning: .htaccess Remove .php and .html extensions from URL with RewriteRule. Fix infinite redirect, real file, subfolder, query string, and 404 issues.
Possible cause: Clean URL and Internal Rewrite
Meaning: .htaccess CORS policy error solution with Access-Control-Allow-Origin, OPTIONS preflight, credentials, mod_headers, API, font, and CDN checks.
Possible cause: HTTP Header and API Security
Meaning: Password protect admin, demo, or development folder with .htaccess and .htpasswd. Solve AuthType Basic, AuthUserFile, HTTPS, 401, and password loop issues.
Possible cause: Apache Basic Authentication
Meaning: Block .env, log, backup, config, and folder access with .htaccess. Solve Require all denied, FilesMatch, IP allowlist, 403, and proxy IP issues.
Possible cause: Apache Access Control
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cp .htaccess .htaccess.bak.$(date +%Y%m%d-%H%M%S)Creates a dated copy of the current rule set.
curl -sSI https://example.com | grep -iE '^HTTP|^server:|^location:|^via:|^cf-ray:'Shows Apache, LiteSpeed, NGINX, CDN, and redirect signs.
apachectl -M 2>/dev/null | grep -E 'rewrite|headers|expires|auth_basic|authz_core'Shows the modules loaded for common `.htaccess` features.
apachectl -SShows the domain's active VirtualHost and document root information.
tail -n 120 /var/log/apache2/error.log 2>/dev/null || tail -n 120 /usr/local/apache/logs/error_log 2>/dev/null || tail -n 120 /var/log/httpd/error_logApache/cPanel/AlmaLinux common error logs are checked.
grep -nE 'RewriteEngine|RewriteCond|RewriteRule|Redirect|Header|AuthType|Require|FilesMatch|Options' .htaccessShows the main directives in the file with line numbers.
php_value memory_limit 512MIn a PHP-FPM/LSAPI environment, add `memory_limit=512M` to `.user.ini`.RewriteRule ^ https://%{HTTP_HOST}%{REQUEST_URI} [R=301,L]RewriteCond %{HTTPS} !=on [OR]
RewriteCond %{HTTP_HOST} !^example\.com$ [NC]
RewriteRule ^ https://example.com%{REQUEST_URI} [R=301,L]RewriteRule . /index.php [L]RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule . /index.php [L]Options -Indexes<FilesMatch "(?i)^(?:\.env|.*\.(?:sql|log|bak))$">
Require all denied
</FilesMatch>
Options -IndexesAllowOverride, loaded modules and VirtualHost document root are the main determinants.
The control panel, PHP handler, proxy mode, and cache behavior can affect the same rule differently.
The application's front controller and managed rewrite blocks must be preserved.
A hidden file that applies configuration rules allowed for the directory and subdirectories it is in on Apache and compatible servers.
Files beginning with a dot are hidden. Enable the option to show hidden files in cPanel File Manager or your FTP client.
No. NGINX rules are written directly in the server/location configuration.
Create a backup first and locate the actual line in the error log. Temporary renaming can be used for diagnosis.
Saving the Permalinks screen or flushing rewrite rules with WP-CLI can regenerate the rules.
No. For simple static URL redirects, `Redirect 301` may be easier to read.
It helps users reach the correct guide from an error message or intended task and helps search engines understand the content cluster.
We examine redirection, rewrite, CORS, access and 500 errors with logs in cPanel, Plesk, LiteSpeed, WordPress, custom PHP and WISECP structures.