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?

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.

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.

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

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