网站非首页链接及部分页面自动出现404错误问题求助

Hey there, let’s tackle this 404 issue head-on. Since your homepage loads fine but every other link throws a "Page Cannot Be Found" error (like the downloads-publications-test page), this is almost certainly a server routing or configuration problem. Here’s a step-by-step troubleshooting guide to get things working:

• Check URL Rewrite Configuration
  If you’re using Apache, make sure you have a .htaccess file in your site’s root directory with the correct rewrite rules. For most CMS platforms (like WordPress), this looks something like:

  RewriteEngine On
  RewriteBase /
  RewriteRule ^index\.php$ - [L]
  RewriteCond %{REQUEST_FILENAME} !-f
  RewriteCond %{REQUEST_FILENAME} !-d
  RewriteRule . /index.php [L]
  

  Also, verify that your Apache virtual host config has AllowOverride All enabled—this lets .htaccess rules take effect.

  For Nginx, add this line to your server block to route all non-static requests to your site’s entry file (usually index.php):

  try_files $uri $uri/ /index.php?$args;
  

• Reset Permalink Settings (If Using a CMS)
  If you’re running WordPress, Drupal, or another CMS, head to your admin dashboard’s Permalink settings. Switch to a non-plain option (like "Post Name") and click "Save Changes". This often triggers an automatic update to your server’s rewrite rules, fixing broken routes.

• Verify File & Directory Permissions
  Ensure your site’s root directory and subdirectories have permissions set to 755, and individual files are set to 644. Incorrect permissions can prevent the server from accessing content, leading to 404s. Double-check that your main entry file (e.g., index.php) exists in the root and has the right permissions.

• Test Static vs. Dynamic Content
  Try accessing a static file you know exists (e.g., a .css or .html file in your root). If it loads, the problem is isolated to dynamic routing. If it also throws a 404, your server’s DocumentRoot is likely pointing to the wrong directory—fix that in your virtual host config.

• Dig Into Server Error Logs
  This is your best bet for pinpointing the exact issue. Check your server’s error logs (Apache’s error.log or Nginx’s error.log) for details about why the 404 is happening. You might see messages about missing files, invalid rewrite rules, or permission denials that will lead you straight to the fix.

• Confirm Virtual Host Setup
  Make sure your domain’s virtual host configuration has the correct DocumentRoot path pointing to your site’s actual files. If the server is looking in the wrong folder, every non-homepage request will fail.

内容的提问来源于stack exchange，提问作者Ruksar Shaikh