I have been using asp.net membership for some years with multiple websites and sql server databases (all modified by the aspnet_regsql tool for use in membership).
A couple of weeks ago, I discovered that my machine had somehow modified Windows Update on its own to automatically update and that SQL Server 2008 Service Pack 3 had been installed overnight (KB2546951). A couple of .NET 4.5 updates were applied as well.
I have been working on several different projects over the past couple of weeks and today I returned to some projects I hadn't worked on recently. Now the membership processes are no longer working on ANY of my existing website applications (solutions).
I cannot logon, cannot register a new user, and cannot configure ASP.NET security using the standard tool. In every case, I receive the well-known "A network-related or instance-specific error occurred while establishing a connection to SQL Server. The server
was not ...
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