RewriteEngine on RewriteCond %{HTTP_HOST} ^domain-name.com$ [NC,OR] RewriteCond %{HTTP_HOST} ^www.domain-name.com$ RewriteCond %{REQUEST_URI} !folder-name/ RewriteRule (.*) /folder-name/$1 [L]
Make sure you replace following 2 parameters in above code block.
- Replace domain-name.com with your actual main domain name.
- Replace folder-name with your sub-folder name.