Silverlight project won't enter debug mode

My Silverlight project in VS 2010 has stopped entering debug mode. Even if I set a breakpoint in the constructor of the Application class, it refuses to hit any breakpoints. My other projects are still fine, but I can't find any setting that may have accidentally gotten changed to keep me from debugging. What开发者_运维知识库 could be going on?

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Open the properties of the associated Web Project. Select the Web Tab. Scroll to the bottom and in the "Debuggers" section make sure "Silverlight" is Checked.

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Not sure what happened, but here's what got it working again.

I changed it to Release mode, compiled it. Closed and restarted VS, changed it back to Debug mode, ran it and breakpoints hit again.

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Make sure the dropdown in the toolbar is set to Debug and not Release

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While Attaching the process please attach w3p.exe and iexplorer instance of Silverlight this should resolve your issue.