My website was crashed by hackers and i am trying to restore from my backup. i have deleted all old files and trying to restore from the backup. i copied all my WP files in public_html. after restoration of database it's throwing an error"You appear to have already installed WordPress.To reinstall please clear your old database table first". I am newbie to WordPress. could someone help me to fix this issue.

Thanks in advance.

1 Answer 1


Open wp-config.php (which is in your new WordPress installation's main directory) in a text editor. Locate the line that reads $table_prefix = 'wp_'; Modify the value of $table_prefix to the prefix in your backup database and Save. Refresh the setup page of your WordPress installation.

  • Table prefix was already updated. but the throwing same error. please guide me to fix it.
    – Sikkandar
    Sep 5, 2018 at 7:45
  • Try to create a new wp-config.php file
    – DHL17
    Sep 5, 2018 at 7:51
  • created new wp-config.php. but still same error.
    – Sikkandar
    Sep 5, 2018 at 8:03
  • I think you need to do a fresh install of wordpress and then add your theme and drop old database and then create new database add it to wp-config.php then import backed-up database and change table_prefix.
    – DHL17
    Sep 5, 2018 at 8:51

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