Type sn -v NameOfAssembly.dll at the command line. It will say “NameOfAssembly.dll is valid” if it is strongly named. It will say “NameOfAssemby.dll does not represent a strongly named assembly” if it is not.
Example:
c:\>sn -v Microsoft.AnalysisServices.AdomdClient.dll
Microsoft (R) .NET Framework Strong Name Utility Version 4.0.30319.1
Copyright (c) Microsoft Corporation. All rights reserved.
Assembly ‘Microsoft.AnalysisServices.AdomdClient.dll’ is valid
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