How can I fix error 2104 in a Silverlight application

I have an existing Silverlight application that has been running for several months with a large number of users. This week we have a new user who is trying to use the application, but he continues to receive this error message.

User agent: Mozilla / 4.0 (compatible; MSIE 8.0; Windows NT 5.1; Trident / 4.0; .NET CLR 2.0.50727) Timestamp: Wed, Nov 24, 2010 03:49:04 UTC

Message: Unhandled Error in Silverlight Application Code: 2104
Category: InitializeError
Message: 2104 An error has occurred.

We are running IIS 7.5 on Windows 2008 R2, the user has Silverlight 4 (4.0.50826.0) installed.

Any idea what could be wrong?

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1 answer

The error is possibly due to MIME types. You will need to add the following MIME types:

  • .xaml application / xaml + xml
  • .xap application / x-silverlight-app
  • .xbap application / x-ms-xbap
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