A trick for the client-side folks doing build-to-build reinstallations (or if you wish to clear all of the PowerPivot code from your client): besides uninstalling “Microsoft PowerPivot for Excel” (via control panel Add/Remove/Uninstall Programs, the exact wording varies depending on the OS you are running), you may also have to delete files in:
C:\Program Files\Microsoft Analysis Services, and
C:\Program Files(x86)\Microsoft Analysis Services (if running on an x64 machine)
This is because the Analysis Services OLE DB provider (and its components) are also installed in these folders. They are not removed during uninstall because we don’t know if there are other components that are using them. Thus you must be careful, particularly if you know that there are other dependent products that are using them before you delete the folders. Dependent products should be uninstalled before you delete these files.
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