WordPress站点登录后访问wp-admin页面提示权限错误问题求助

Hey there, let's work through this annoying wp-admin access issue you're dealing with. Since you've already eliminated plugins, themes, and .htaccess as the cause, let's dive into other likely fixes:

1. Verify Your User Role Permissions #

It's possible your user account's administrator privileges got corrupted or accidentally changed. Here's how to check and fix this via phpMyAdmin:

• Log into your hosting control panel and open phpMyAdmin.
• Select your WordPress database.
• First, find your user ID by running this query (replace YOUR_USER_EMAIL with your login email):

  SELECT ID FROM wp_users WHERE user_email = 'YOUR_USER_EMAIL';
  

• Next, check your user's capabilities with this query (replace YOUR_USER_ID with the ID from the previous step):

  SELECT meta_value FROM wp_usermeta WHERE user_id = YOUR_USER_ID AND meta_key = 'wp_capabilities';
  

• The result should include "administrator":true. If it doesn't, update the capabilities with:

  UPDATE wp_usermeta SET meta_value = 'a:1:{s:13:"administrator";b:1;}' WHERE user_id = YOUR_USER_ID AND meta_key = 'wp_capabilities';
  

Note: If your WordPress table prefix isn't wp_, replace it with your actual prefix (e.g., wp_abc_).

2. Correct Site & Home URL Settings #

Mismatched or incorrect site URLs can trigger permission errors. Verify these in phpMyAdmin:

• In your WordPress database, run this query:

  SELECT option_name, option_value FROM wp_options WHERE option_name IN ('siteurl', 'home');
  

• Both values should match your actual site URL: https://www.abc.ae (use HTTPS if your site is secured).
• If either is wrong, update them with:

  UPDATE wp_options SET option_value = 'https://www.abc.ae' WHERE option_name = 'siteurl';
  UPDATE wp_options SET option_value = 'https://www.abc.ae' WHERE option_name = 'home';
  

3. Fix WordPress File & Folder Permissions #

Incorrect permissions on wp-admin files can block access. Use FTP or SSH to adjust these:

• Set the wp-admin folder permissions to 755:

  chmod -R 755 wp-admin/
  

• Set all .php files inside wp-admin to 644:

  chmod -R 644 wp-admin/*.php
  

Avoid using 777 permissions—they're a major security risk.

4. Reinstall WordPress Core Files #

Corrupted core files might be causing the permission issue. Here's how to safely reinstall:

• Download the latest WordPress zip file from WordPress.org.
• Extract the zip, then delete the wp-content folder and wp-config-sample.php from the extracted files.
• Upload the remaining wp-admin and wp-includes folders to your server, overwriting the existing ones.
• This won't affect your themes, plugins, or settings—just replaces core system files.

5. Check wp-config.php for Misconfigured Constants #

Double-check your wp-config.php file for any constants that might restrict admin access:

• Ensure there's no accidental line like:

  define('ADMIN_COOKIE_PATH', '/wrong-path/');
  

• If you have security-related constants, temporarily comment them out (add // at the start) to test if they're the cause. For example:

  // define('DISALLOW_FILE_MODS', true);
  

After each step, log out of WordPress and log back in to test access to wp-admin. One of these fixes should resolve the permission error since you've already ruled out the common plugin/theme/.htaccess issues.

内容的提问来源于stack exchange，提问作者Ali Ahmed