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Brand new Windows Server 2008 R2 install handed over to us from Windows admin group. I try to run the SQL Server 2008 R2 install and get this error:

Unhandled Exception: System.Security.SecurityException: Request failed. at Microsoft.SqlServer.Chainer.Setup.Setup.DebugBreak() at Microsoft.SqlServer.Chainer.Setup.Setup.Main()*

The error happens almost immediately, so there isn't even a log file produced by the installer. I'm thinking there's a security setting I need to fix in the OS, but I have no idea where to begin.

Thanks in advance for any help you can give.

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Are you running install with elevated privileges? –  squillman Apr 1 '11 at 16:16

1 Answer 1

Are you installing from a file share? Try installing using the actual install disc.

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turns out the problem was that the SQL Server 2008 R2 installer doesn't work very well with .NET 4.0 installed on the machine. There are some config files that have to be modified to get it to work. I'll come back and post info on the workaround next week when I get back to the office. –  Osolage May 22 '11 at 15:44

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