http://blogs.msdn.com/jongallant/archive/tags/debug/default.aspxTags: debugen-USCommunityServer 2.1 SP1 (Build: 61025.2)http://blogs.msdn.com/jongallant/archive/2009/12/02/solution-to-the-exception-the-data-necessary-to-complete-this-operation-is-not-yet-available-when-debugging-windows-mobile-apps.aspxWed, 02 Dec 2009 22:36:14 GMT91d46819-8472-40ad-a661-2c78acb4018c:9931656jongallant0http://blogs.msdn.com/jongallant/comments/9931656.aspxhttp://blogs.msdn.com/jongallant/commentrss.aspx?PostID=9931656http://blogs.msdn.com/jongallant/rsscomments.aspx?PostID=9931656&#160; The exception &quot;the data necessary to complete this operation is not yet available&quot; can mean that the app you are trying to debug is already running on the device.&#160; Go to the device, close the app and try again. HTH Jon...(<a href="http://blogs.msdn.com/jongallant/archive/2009/12/02/solution-to-the-exception-the-data-necessary-to-complete-this-operation-is-not-yet-available-when-debugging-windows-mobile-apps.aspx">read more</a>)<img src="http://blogs.msdn.com/aggbug.aspx?PostID=9931656" width="1" height="1">solution.netdebugvisual studiomobiledevmobilehttp://blogs.msdn.com/jongallant/archive/2009/11/23/solution-to-the-exception-connection-failed-the-device-security-configuration-disallowed-the-connection-ensure-that-you-have-the-appropriate-certificates-on-your-device-for-development-review-your-sdk-documentation-for-proper.aspxMon, 23 Nov 2009 11:35:13 GMT91d46819-8472-40ad-a661-2c78acb4018c:9927212jongallant0http://blogs.msdn.com/jongallant/comments/9927212.aspxhttp://blogs.msdn.com/jongallant/commentrss.aspx?PostID=9927212http://blogs.msdn.com/jongallant/rsscomments.aspx?PostID=9927212You will get this exception if you try to debug on a physical device from Visual Studio and haven’t install the debug certificates. “Connection failed. The device security configuration disallowed the connection. Ensure that you have the appropriate certificates...(<a href="http://blogs.msdn.com/jongallant/archive/2009/11/23/solution-to-the-exception-connection-failed-the-device-security-configuration-disallowed-the-connection-ensure-that-you-have-the-appropriate-certificates-on-your-device-for-development-review-your-sdk-documentation-for-proper.aspx">read more</a>)<img src="http://blogs.msdn.com/aggbug.aspx?PostID=9927212" width="1" height="1">solutiondebugwindows mobilevisual studiohttp://blogs.msdn.com/jongallant/archive/2007/03/25/how-to-get-your-local-machines-ip-address.aspxSun, 25 Mar 2007 21:37:00 GMT91d46819-8472-40ad-a661-2c78acb4018c:1948057jongallant0http://blogs.msdn.com/jongallant/comments/1948057.aspxhttp://blogs.msdn.com/jongallant/commentrss.aspx?PostID=1948057http://blogs.msdn.com/jongallant/rsscomments.aspx?PostID=1948057I'm working on this app that pulls the ip address from the request headers. When debugging the app locally the headers are always "127.0.0.1", which doesn't help because I need to know the actual IP address. Here is one way to get the local machines IP...(<a href="http://blogs.msdn.com/jongallant/archive/2007/03/25/how-to-get-your-local-machines-ip-address.aspx">read more</a>)<img src="http://blogs.msdn.com/aggbug.aspx?PostID=1948057" width="1" height="1">debugdnsipv4