The company describes it as an “enterprise-grade” authentication method:. Oct 29, 2009  · SQL Server 2008 setup fails with a Microsoft.NET Framework exception ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ The company describes it as an “enterprise-grade” authentication method:. I need to to install Net Framework 3.5 SP1 on Server 2012 and I know of the method which requires the installation media. Installing.NET…