WCF: Getting MessageSecurityException while calling webservice

Time flies and it looked like it was yesterday that i wrote my last post. Last couple of months have been very busy, so blogging was put on hold but everytime i got a case that i believe i should talk about it, i kept it. So expect a burst on posts. Yesterday, I and…


Process Explorer to the rescue

Monday was a day to forget. I arrived at the office around 8:30 am, started my machine (like always), inserted my credentials, the desktop shows up and suddenly it gets unresponsive. First thing I do is CTRL+ALT+DEL, start Task Manager and it also gets hanged. The only commands that were responsive was log off and…

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Production Troubleshooting Flowchart

Usually (probably always I hope) when troubleshooting production environments we don´t have Visual Studio or other “nice looking” tools to help us finding problems. But we have one of my favorite tools: Windbg. The first time someone showed me Windbg and all the stuff around production debugging like memory dump, … I was a little…


ClassicASP: XMLHTTP and ServerXMLHTTP

From time to time i get some memory dumps related to classic ASP. Last month I got some and the symptom was slow performance or event total hang with all requests just sitting around. Typically when i´m looking at a classic ASP memory dump I like to use the extension that comes with DebugDiag called…

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Troubleshooting blocking issues in SQL Server 2000 and 2005

Most of my work is supporting and troubleshooting production environments and very often developers I work with say   “We are having some performance issues in our website and we believe the bottleneck is in SQL Server. We have collected some profilers and some queries take a long time to finish. But if we execute…

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