Nothing occurs or an error is encountered when users select to download attachments
|Knowledge Article Number||000220689|
Trying to download a attachment from my cases there are three things that occur in different instances:
1) Select attachment and nothing happens
In the Spring '14 release, Salesforce introduced the "File Upload and Download Security" security controls setup page. If a file uploaded with a specific mime type differs from the file's extension it will not be processed as the mime type specified on upload.