IIS: requesting PNG returns 401

Question

I am attempting to create a web application, and I am testing it on my desktop using IIS.

My problem comes whenever I attempt to request a PNG image. The server responds with a 401 specifically for PNG images, but it responds just fine with JPEG images in the same folder.

I even ensured specifically that PNG files are allowed in the IIS Manager, as you can see in the image below:

Here is the log file:

2015-10-04 18:32:55 127.0.0.1 GET /asteroids/resources/millenium_falcon.png - 80 - 127.0.0.1 Mozilla/5.0+(Windows+NT+10.0;+Win64;+x64)+AppleWebKit/537.36+(KHTML,+like+Gecko)+Chrome/46.0.2490.52+Safari/537.36 http://localhost/asteroids/index.html 401 3 5 0
2015-10-04 18:32:55 127.0.0.1 GET /asteroids/resources/background.jpg - 80 - 127.0.0.1 Mozilla/5.0+(Windows+NT+10.0;+Win64;+x64)+AppleWebKit/537.36+(KHTML,+like+Gecko)+Chrome/46.0.2490.52+Safari/537.36 - 304 0 0 22

Is there anything else I am not checking here? I would appreciate any help!

Ortund · Answer

Your IIS_IUSRS account in Windows might not be authorized to access the png files.

Check the Security applied to the JPG files and to the PNG files as below:

This is default settings, note that Read permissions are allowed and so are Read & Execute.

This is by default on my files. I haven't changed these permissions.

HTH

IIS: requesting PNG returns 401

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