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Manual Cleanup of Add In Installation

Nicholas Goodman edited this page Oct 23, 2017 · 1 revision

Introduction

Although the Excel API Demo Add-In includes an installer which should reliably update and install over previous versions of itself, there have been a few changes in the installation behavior over time which may warrant the need to manually uninstall the XLL from the system. Believe it or not, Excel itself and the Interop APIs provide no direct means of Add-In removal; the only effective means of removal is file deletion and registry manipulation.

Steps to Removal

  1. Close all OpenFin and Excel instances on the computer
  2. Delete the folder %localappdata%\OpenFin\shared\assets\excel-api-addin
  3. Use the Registry Editor and delete the following values (if they exist), where xx is the version of Excel you have:
  • HKCU\Software\Microsoft\Office\xx.0\Excel\Options\OPEN* (some number, with a value that contains the path to the OpenFin XLL)
  • HKCU\Software\Microsoft\Office\xx.0\Excel\Add-in Manager (any value which contains the path to an OpenFin XLL)
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