WordPress login issues can stem from various causes, including incorrect credentials, plugin conflicts, or server problems. Here’s a step-by-step guide to help you troubleshoot and resolve the issue:

1. Check Your Login Credentials

  • Ensure you're entering the correct username/email and password.
  • If you've forgotten your password, use the "Lost your password?" link on the login page.

2. Clear Browser Cache and Cookies

  • Sometimes, outdated browser data can cause login problems. Clear your browser cache and cookies, then try logging in again.

3. Try a Different Browser or Incognito Mode

  • Test logging in with another browser or in incognito/private mode to rule out browser-related issues.

4. Reset Your Password via Database

If you cannot reset your password via email:

  • Access your hosting control panel (e.g., cPanel) or phpMyAdmin.
  • Navigate to the wp_users table.
  • Locate your username, edit the password field, and use the MD5 function to hash a new password.

5. Disable Plugins via File Manager

A faulty plugin might cause login issues:

  • Access your site files using FTP or File Manager in your hosting control panel.
  • Navigate to the wp-content/plugins/ directory.
  • Rename the >code>plugins folder to something like plugins_backup.
  • Try logging in again. If it works, rename the folder back and enable plugins one by one to find the culprit.

6. Check for Theme Conflicts

  • Rename your active theme folder in wp-content/themes/ to deactivate it.
  • WordPress will revert to a default theme. Check if you can log in.

7. Verify .htaccess File

  • Open the .htaccess file in your WordPress root directory.
  • Ensure it contains the correct WordPress rules. Replace it with the default structure if necessary.

8. Increase PHP Memory Limit

  • If the issue is related to memory, increase the limit in your wp-config.php file: 
    define('WP_MEMORY_LIMIT', '256M');

9. Check File Permissions

  • Ensure the correct permissions for your WordPress files and folders:
  • Folders: 755
  • Files 644

10. Error Logs and Debugging

  • Enable WordPress debugging by adding this to your wp-config.php file: 
    define('WP_DEBUG', true);
define('WP_DEBUG_LOG', true);
  • Check the debug.log file in the wp-content folder for errors.

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