Hi, For this post, the title says it all. I have heard of many who have accidently changed his WordPress URL or Site URL in the WordPress Dashboard General Settings and hence making the site down. For as currently, there is no visible option to revert it back. But a simple run on to the PhpMyadmin can possibly solve the problem.
2. Select the WordPress Database.
3. Select the Table wp_options Or in the latest version of WP, it would be wp_mainoptions.
4.Edit The SiteURL And Home With the correct URL of Your Own and Click Go.
5. Great! Enjoy Seeing Your Site Come Back Again!!