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Windows permissions are only part of what it takes to work in Apache. &nbsp;Apache will normally only display files that are under the 'web root' also known as the &quot;DocumentRoot&quot;. &nbsp;See here: <a href="http://httpd.apache.org/docs/current/mod/core.html#documentroot" rel="ugc">http://httpd.apache.org/docs/current/mod/core.html#documentroot</a>&nbsp; More info here: <a href="http://httpd.apache.org/docs/current/urlmapping.html#documentroot" rel="ugc">http://httpd.apache.org/docs/current/urlmapping.html#documentroot</a><br />
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Also, from <a href="http://httpd.apache.org/docs/2.2/mod/core.html#options" rel="ugc">http://httpd.apache.org/docs/2.2/mod/core.html#options</a><br />
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<blockquote>
Indexes<br />
&nbsp; &nbsp; If a URL which maps to a directory is requested, and there is no DirectoryIndex (e.g., index.html) in that directory, then mod_autoindex will return a formatted listing of the directory.
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Conversely, if Options -Indexes is in your configuration file, you won't get a file listing and you will get the error because there is nothing that Apache is allowed to display. &nbsp;You can still get files that you can use the name for like 'about.html' but you don't get the directory listing.<br />
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Note also that everything that you can use in '.htaccess' can also be used in 'httpd.conf', the Apache configuration file.
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Just as a note,. a '.htaccess' file affects the directory/folder it is in plus all sub directories/folders.
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I selected my own comment because I feel I figured it out myself. &nbsp; It turned out to be the .htaccess file that was making the folder it was inside of invisible from the browser. &nbsp;I had not seen the .htaccess file the first time I looked. &nbsp; I didn't expect to see it though since I would expect it to only affect sub folders.
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There is no .htaccess file in the folder or in any of it's parent folders. &nbsp; &nbsp;I'm running Apache on a Windows 7 computer. &nbsp; <br />
I've checked it using google chrome as well.<br />
The directory shows up in internet Explorer but when I see the files listed in the parent directory it doesn't show up. &nbsp; The permissions are the same as the other folders. &nbsp;If I add that folder to the url in the address bar I get an error:<br />
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<h2>Server error!</h2>
<br />
The server encountered an internal error and was unable to complete your request. Either the server is overloaded or there was an error in a CGI script.<br />
<br />
If you think this is a server error, please contact the webmaster.<br />
Error 500<br />
localhost<br />
12/26/13 17:22:10<br />
Apache/2.2.25 (Win32) PHP/5.3.27
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There is no .htaccess file in the folder or in any of it's parent folders.    I'm running Apache on a Windows 7 computer.   
I've checked it using google chrome as well.
The directory shows up in internet Explorer but when I see the files listed in the parent directory it doesn't show up.   The permissions are the same as the other folders.  If I add that folder to the url in the address bar I get an error:

Server error!

The server encountered an internal error and was unable to complete your request. Either the server is overloaded or there was an error in a CGI script.

If you think this is a server error, please contact the webmaster.
Error 500
localhost
12/26/13 17:22:10
Apache/2.2.25 (Win32) PHP/5.3.27

Apache Won't display a subfolder

The Apache HTTP Server is a secure, efficient and extensible server that provides HTTP services in sync with the current HTTP standards. Typically Apache is run on a Unix-like operating system, but it is available for a wide variety of operating systems, including Linux, Novell NetWare, Mac OS-X and Windows. Released under the Apache License, Apache is open-source software.