The problem:
You’re not able to login to WordPress admin. You receive a 404 error page instead.
Solution 1: Update the URL in database
If you’re able to access phpMyAdmin, try to update the URL in the database.
- Login cPanel, click on phpMyAdmin under Databases.
- Select your WordPress database. For example: Username_wrdp1.
- Go to wp_options, click on Browse.
- Search for siteurl under the field option_name.
- Click on Edit Field.
- Change the URL in the input box of option_value. ( example : http://www.yuby.com/ )
- At the bottom of page, click the Go button.
Solution 2: Update Folder Attributes
- Go to “/wp-admin” directory via FTP.
- Right click on wp-admin directory and click on File Attributes.
- Update the value to 755 and check Recurse into subdirectories if there’s an option.
- Click OK.
- Repeat step 1 to step 4 for /wp-content and wp-includes.
- Open your web browser and try to login to WordPress admin. Press Ctrl + F5 to clear cache.