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If you've seen one of my Case of the Unexplained presentations (like the one I delivered at TechEd Europe last month that's posted for on-demand viewing), you know that I emphasize how thread stacks are a powerful troubleshooting tool for diagnosing the root cause of performance problems, buggy behavior, crashes and hangs (I provide a brief explanation of what a stack is in the TechEd presentation). That's because often times the explanation for a process's behavior lies in the code it loads, either explicitly like in the case of DLLs it depends on, or implicitly like for processes that host extensions. This case is another demonstration of successful stack troubleshooting. It also shows how a little time troubleshooting to get a couple of clues can quickly lead to a solution.

The case opened when the customer, a network administrator, contacted Microsoft support because a user reported that Microsoft Project files located on a network share were taking up to a minute to open and about 1 in 10 times the open resulted in an error:



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http://blogs.technet.com/b/markrussinovich/archive/2010/12/07/3373406....




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