I recently installed Visual Studio 2010 and was getting the following error message when running the code (F5) "Error connecting to SQLexpress". The error page prevented me from seeing the webpage.
I consulted many different trouble-shooting recommendations, however, in my case, it was simply a problem with SQL. When I reinstalled SQL server 2008 on my computer, the error message was gone and I was able to see the ASP.net web development page.
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