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Ezequiel Jadib

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How-to: Fix the ‘The “ValidateXAML” task failed unexpectedly’ error after installing Microsoft Silverlight Tools Beta 2

Last week I've installed Microsoft Silverlight Tools 2 Beta 2 on my laptop to start developing applications for Silverlight 2 Beta 2.

Once the installation finish, I created a Silverlight Application just to see if everything works as expected. The application was successfully created but when I tried to build and run the solution, I faced with the following error:

image

Read the full article.

Published Jul 09 2008, 12:51 PM by ejadib
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Comments

 

Sandeep said:

blogs.southworks.net/.../how-to-fix-the-the-validatexaml-task-failed-unexpectedly-error-after-installing-microsoft-silverlight-tools-beta-2

January 19, 2010 11:49 PM
 

Subbu said:

This means whenever you download a project from the internet it is quite likely that windows will automatically block its content for few dll’s and if it’s so you will get this error.

So the easy solution is to look for the file for which its complaining as in the above solution its the Activity control for which it’s complaining, so just navigate to that file right click on the file and press unblock and that’s it , go  and rebuild your solution and everything will work as desired.

July 20, 2011 5:49 AM

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About ejadib

Ezequiel Jadib is a Senior Lead Developer for Southworks, a software development company that provides consulting and development services for Fortune 50 companies around the world. He has worked for numerous projects with Microsoft, including the Smart Client Software Factory, the Web Client Software Factory, the Multi-Tenant Database Performance Guide, the Composite Application Guidance for WPF & Silverlight (Prism) and the Tech-Ed 2008 Keynote demo. He recently lead the efforts to create a set of samples and hands-on labs about the Live Services Platform, and also lead the development team for PDC 2008 demo highlighting SQL Data Platform. He is continuously contributing to the Client Application Development community sharing knowledge around Web Client, Smart Client and Composite WPF thought his blog, Codeplex and forums.
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