I recently too a clients site and duplicated it on a development site to upgrade the DNN version from 4.3 to 4.9 and to update the skin. Links to files on the old site work just as you would expect - they allow the user to download them or it opens a pdf viewer. However, on the development site they all resolve to the following error when running Firefox. When testing in IE it just hangs for ever.

Any help wouold be greatly appreciated.

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Redirect Loop

Firefox has detected that the server is redirecting the request for this address in a way that will never complete.

The browser has stopped trying to retrieve the requested item. The site is redirecting the request in a way that will never complete.

    * Have you disabled or blocked cookies required by this site?
    * NOTE: If accepting the site's cookies does not resolve the problem, it is likely a server configuration issue and not your computer.

Files are of acce
Folder has permission for all users to view - I even tried placing the files in a new folder with user permission

I am not sure where the even errors are located.