- Deactivate all the plugins before you upgrade.
- Go to ‘Manage’, then to ‘Export’, then click on the button which says ‘Download Export File’.
- Upload all the files and folders, except the wp-content, the reason being it has all your plugin and theme files, so there is no need to replace them as it is not corrupted.
- Although the files in wp-includes are most susceptible to hacks, the reason why we upload even wp-admin is because wp-admin has upgrade.php file in it.
- Go to http://www.yoururl.com/wp-admin/upgrade.php and click on the link that says ‘Upgrade WordPress’.
- Activate all the plugins again.
That’s it!