HTTP Error 403.14 - Forbidden" error when you open an IIS 7

https://support.microsoft.com/en-us/help/942062/http-error-403-14-forbidden-error-when-you-open-an-iis-7-0-webpage

To resolve this problem, follow these steps:

1. Start IIS Manager. To do this, click Start, click Run, type inetmgr.exe, and then click OK.
2. In IIS Manager, expand server name, expand Web sites, and then click the website that you want to modify.
3. In the Features view, double-click Directory Browsing.
4. In the Actions pane, click Enable.