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POBreakpoint will not break in Silverlight
 

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    <p>I am unable to hit a breakpoint on the server side of a Silverlight web application. I know the code executes as I can break on the asynchronous callback with what I was expecting. It's only my machine with this issue.</p> <p>I am aware this seems to be a common question, however all the answers to the ones I have seen have not helped me, including:</p> <ul> <li>The <strong>breakpoint is red</strong> indicating it will be hit.</li> <li><strong>Silverlight checkbox is checked</strong> on the web project's properties.</li> <li>Clean &amp; build the solution.</li> <li>Getting a new version from source control.</li> <li>Cleared everything from my web browser: cache, cookies etc... (<strong>I am using IE</strong>).</li> <li>Clearing the temp files in %windir%/Windows/Microsoft.NET/Framework/v4.0.30319/Temporary ASP.NET Files.</li> <li>Checked that all projects are being built in the configuration manager.</li> <li>Everything set to debug and not release in the configuration manager.</li> <li>Manually attaching to the w3wp.exe process.</li> <li>IIS reset.</li> <li>IIS is set to use .NET v4 and the pipeline set to classic not integrated.</li> <li>Reinstalled IIS and freshly configured.</li> <li>Reinstalled Visual Studio.</li> <li>Reinstalled Silverlight.</li> </ul> <p>I am using Visual Studio 2010 (.NET 4), Silverlight 4, and using IIS (I think 6, cannot remember) to host the site.</p> <p>Interesting behaviour I have discovered (may help to diagnose):</p> <ul> <li>It will still not break if I use Visual Studio's own development server to host the site instead of IIS.</li> <li>I saw a blog post (cannot remember where or I would provide a link) under Debug -> Windows -> Proccess (Ctrl D, P) to check that the w3wp.exe process is set to "Silverlight" under the "Debugging" header - mine was set to "Managed" and was unable to set it to silverlight when attaching. After checking a colleagues settings on a machine which was working, his was also set to managed.</li> </ul> <p>Any suggestions will be very appreciated! </p> <p><strong>UPDATE:</strong> Thanks for all the suggestions. I decided to format C:\ instead of spending more time playing around, as my machine needed it badly anyway. I still am not sure what the problem was, but it is working now.</p> <p>I did try a couple of other things before this such as deleting the .sou files, and checking I was running the same version of Silverlight, mentioned in this <a href="http://radheyv.blogspot.co.uk/2011/04/breakpoints-are-not-hitting-in-my.html" rel="nofollow">blog post</a>, with no luck. Hopefully this will act as a checklist for people with this problem in the future.</p>
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    1. COIsn't your application configured as Out-of-Browser? I've experienced various debugging-related problems with that setting turned on (it can be changed somewhere in project properties, don't remember the exact place now).
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      1. USNikola Anusev
    2. COThanks for the comment. And it only runs within the browser. I'll have a look for that setting tomorrow - I am not at work at the moment to test it.
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    3. COUrgh, I often have similar issues, usually trying in different browser helps... You may try to test in Chrome for example. Attach to chrome.exe process that uses Silverlight and try - that may be temporary fix...
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      1. USIhor Deyneka
 

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