404 Error After wp-config URL fix

probably you’ll have to do a search and replace inside the database via phpMyAdmin

of course, backup all the tables before doing any changes

here some useful mysql queries

and this is the search’n’replace query
update [table_name] set [field_name] = replace([field_name],'[string_to_find]','[string_to_replace]');

Wait, @maizlik, are you just setting the URL back to what it originally was?

You shouldn’t need to search and replace… have you tried just resetting permalinks by going to the permalink page and hitting save?