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Before you can run Excel TimeTrack Client or any other VSTO "solution," you must have the Primary Interop Assemblies for Microsoft Office installed in the global assembly cache (GAC).
You can do this in two ways:
- Performing a complete installation of Microsoft Office where .NET Framework is already installed. OR
- Installing the redistributable Primary Interop Assemblies package, available from the Microsoft Download Center for the version of Microsoft Office you are running, where .NET Framework is already installed.
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