IIS 7.5 not serving excel XLS files even though mime-type is set

My Windows 2008 R2 server with IIS7.5, for some reason when i try to download an xls file from the website, it gives me a 503 Service unavailable error. The mime-type is set properly for this website and I also tried adjusting the maxAllowedContentLength as well without success.

Solution

Apparently SQL Reporting Services (which wasnt even running) hijacks the /reports directory for every website. I had to open the Reporting Services admin and change the directory it uses.

Source

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