Error while debugging Solution... RRS feed

  • Question

  • User-1706989909 posted

    Hi All,

    I have a Project of multiple solutions. Build succeds but F5 will through the error. "Unable to start debugging. The silverlight managed debugging package isn't installed."           Now what is this error? Why it is coming? How to resolve this?

    I have these software installed on system.

    1. VS 2008.
    2. VS 2008 SP1
    3. Microsoft  Silverlight 5.1
    4. Microsoft silverlight 3SDk
    5. Microsoft silverlight tools for VS2008 SP1-ENU 9.0.3

    Kindly help me.


    Thursday, February 6, 2014 10:38 AM


  • User1607087669 posted



    You need more than the SDK to debug silverlight, the Silverlight Tools for Silverlight 3 which also includes the version of the runtime that is debuggable.

    You may also need to install the Silverlight 4 developer runtime, since its quite likely you will run into a site the requires silverlight 4 but installing the standard 4 runtime will put you at square one.

    This is the link to the silverlight 4 dev runtime:-


    The Solution is

    1. You might already have lower version Silverlight chainer. So uninstall everything related to Silverlight from Control panel Add and Remove programs.
    2. Download and install the Silverlight Developer run time (any version you want) EX: 3.0
    3. Download and install Silverlight 3.0 Tools
    4. Create and Run the application. The application will run successfully.
    • Marked as answer by Anonymous Thursday, October 7, 2021 12:00 AM
    Thursday, February 6, 2014 12:08 PM

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