Deploying and installing a managed COM add-in securely in Microsoft® Office XP currently requires the assembly be hosted in an unmanaged COM add-in proxy component called a shim. The explanation on what a shim is and why it is currently needed to deploy COM add-in DLLs has been discussed in detail in the Deployment of Managed COM Add-Ins in Office XP article on MSDN and therefore won't be repeated here. This article will concentrate on how to use the COM add-in shim solution template so that you can successfully deploy your managed COM add-in under the highest Office XP security setting.
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