There are a number of problems adding flash to SharePoint 2010. A few issues and resolutions follow:

PROBLEM: Flash files won’t open from a document library

• What’s actually happening here is that SharePoint adds special headers to disallow applications and scripts from being run in the browser.
• This is a security measure to keep users from uploading dangerous content.
• The user gets prompted to download the file instead.

SOLUTION:

• Follow these steps: http://melick-rajee.blogspot.com/2010/12/how-to-enable-flash-content-in.html
• Once file handling is set to permissive, any user can upload any application they want to, which is obviously a security issue.
• To correct this simply set the file handling back to strict after uploading the content.
• This will allow the files to open, but will still prompt for a download, if you want to make a MIME type exception (allow a single type of file through) follow these steps: http://www.pdfsharepoint.com/sharepoint-2010-and-pdf-integration-series-part-1/ (go to “Solution 2”).

PROBLEM: I can’t access swf files from the 14 hive! Continue reading Dealing with Flash Modules in SharePoint →