This usually occurs due to one of two reasons:
Improper naming of your web site's home page.You need to ensure that your default/home page, i.e. the one that displays when typing your domain name into a browser, is named either :
The file name should also be all lowercase. The reason for needing to name your default page one of the above is that web servers are programmed to look for particular files when your domain name is fetched. If it doesn't find one of those file name variations, it will return a 404 error code, "File not found".
Uploading to the wrong folder
All your web pages need to be in the httpdocs folder and your home page should be directly under httpdocs, not in a sub-folder. Uploading to the wrong folder is a very easy mistake to make, so even if you're sure you did so, double check.
How to register a name: Enter your choice in the search tool and click 'GO'. If after the check the domain names search results show your choice is available, you will then have the option to proceed to purchase registration; which is a very quick and easy process - start a search and find your ideal website address now.