I have a site which is opening with www & without www . But I want to open it with www. Tried the General Settings but did not work. So, can anyone suggest me how can I solve the issue?
There are plugins (All in One SEO does it for example) that can handle canonical URLs for you. You can also add a bit of code to your .htaccess file if you're comfortable with that, though be careful not to overwrite any of the WP stuff already in there (or your permalinks will break).