By adding text/xml to the whitelist along with 3dr and .xap then I now have a larger proportion of Silverlight content displaying but obviously it is not ideal that I would have to whitelist these media types for all our users. I installed the firefox add on as suggested which is a useful little tool (I already had the IE equivalent).
I still cannot get the content on this page to display through the proxy and I get a server error. I think (from looking at the headers in firefox) that it is the zip file that is the problem that it needs to download to launch
Michael is there no way of creating a media type of Silverlight in the same way there is one for flash?
If you wish to add a media type for Silverlight you can do the following:
It may be necessary to add a media type catalog entry under Common > Media Type Catalog, see below for the information to add:
Add or modify Media Type: application/x-silverlight-app
File Extensions: xap
Magic bytes are necessary: checked
Magic bytes are ambiguous: unchecked
Magic bytes: 504B0304
I worked with agperzan, and we also added a whitelist entry for the media type:
Entry type: Media Type
Apples: Any type
Jon, signature that you specified will also match to standard .zip archives (Siliverlight applications are really code packed into .zip archive).
In MWG7 we have special checker for zip-based files, that allows us to distinguish sliverlight from other types.
It looks like I have the same problem but with the added difficulty of sliverlight not supporting proxy authentication. When in our organisation an older client (xp/win2003) opens the content, it switches to windows media player with a login prompt. But when a new Win 7 client opens the content it only wants to use Silverlight.
i am struggling with the same issue. we are running mcafee webgateway 6.9 and users are having issues with playing silverlight videos.
has anyone found a definitive fix for this issue?
I run into the same issue regarding the media type "application/x-silverlight-app" which seems not to be available also in MWG 188.8.131.52. If I read through this thread I'm not fully clear about if I can define custom media types unter MWG7? The one says "works on mwg7.1, the other says that does not exists in mwg7". Whitelisting separate url is not such a fancy solution, so am I able to define a custom media type in MWG7 or not?