Kan ikke vise indhold i .com bibloteker

Hejsa!

Min localhost kan ikke vise indholdet .com bibloteker, dvs, jeg kan se filerne, men klikker jeg på en fil f.eks. index.html viser den bare:

The page cannot be displayed
There is a problem with a program on the page you are trying to reach, and the page cannot be displayed.

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Please try the following:

Open the localhost home page, and then look for links to the information you want.
Click the Refresh button, or try again later.

HTTP 403.1 Forbidden: Execute Access Forbidden
Internet Information Services

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Technical Information (for support personnel)


Background:
You have attempted to execute a CGI, ISAPI, or other executable program from a directory that does not allow programs to be executed.


More information:
Microsoft Support

Men hvis jeg så omdøber bibloteket til f.eks. hejsa.dk (i stedet for hejsa.com), så virker det fint fint...

Hvad faen kan det skyldes?