I am installing a wordpress folder on a windows server, but it shows page not found. I am unable to even see the first page of installation. This is the site address http://np-environmental.com/newsite/
Can anyone tell what the issue can be??
If you've uploaded all the Wordpress files, then it appears your web site isn't setup to process .php files. Ask your web host to enable PHP for your site.
It would appear you've uploaded the files, as I see http://np-environmental.com/newsite/license.txt and /readme.html, and looking deeper /newsite/wp-admin/css/about.css
Assuming the Windows server has PHP installed and configured, and IIS is setup to process PHP requests in general, your site will need to have a handler mapping for PHP added. Otherwise you'll get
HTTP Error 404 - File or directory not found if you try opening any .php files.
If this is your own Windows server, there are detailed instructions on what you need to do for IIS 7+ at http://php.net/manual/en/install.windows.iis7.php, or older IIS 5.1/6 at http://php.net/manual/en/install.windows.iis6.php.