When umbracoUseDirectoryUrls is set to true in web.config then any media that has an & in it will not download - the error is "bad request".
The file name is rewritten as &.

The media will download fine when the wild card is not set in IIS.

I appreciate that file names should not really have & in them anyway so it would seem better if the media uploader prevented uploading of files with & in them.

Is there anyway around this as my client has uploaded about 100 files with & in the file name.

Thanks

Dan