What is a web.config file?

A web.config file lets you customize the way your site or a specific directory on your site behaves. For example, if you place a web.config file in your root directory, it will affect your entire site (www.coolexample.com). If you place it in a /content directory, it will only affect that directory (www.coolexample.com/content). However, in order for a web.config file to register in a specific directory, there must be a web.config file in the root directory.

web.config files work on our Windows servers.

Using a web.config file, you can control:

  • Database connection strings.
  • Error behavior.
  • Security.

web.config files are XML documents. ".config" is not an extension like .html or .txt. For more information on how to set up web.config files, visit Microsoft's Web site.


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