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Uninstall Excel Add-in Manually

If automatic uninstallation leaves remnants, or you want to ensure a complete cleanup of SEI and related add-ins, follow the instructions below.

important

Manual uninstallation only applies to versions earlier than Version 2024 Release 3.

Uninstall a previous version​

  1. Open Microsoft Excel.
  2. Click the File tab, then select Options.
  3. Go to the Add-ins section, then click Go.
  4. In the list, clear the checkbox next to SEI Add-in for Excel.
  5. Close all Excel windows.
  6. Go to Control Panel.
  7. Select Programs, then Programs and Features.
  8. Select SEI Excel Add-in and click Uninstall.
  9. Follow the wizard steps to remove the software.

Complete manual cleanup​

If Excel Add-in was not fully removed:

  1. Remove the Add-in from Excel
    Detach the XLA from Excel.
  2. Delete leftover files
    Remove all files and folders from the Excel Add-in installation path.
  3. Delete EXCEL.EXE.Config (if present)
    Find and remove EXCEL.EXE.Config from the Office installation folder.
    Common locations include:
    • C:\Program Files\Microsoft Office\root\Office16 (Excel 64-bit, 2016 or later)
    • C:\Program Files (x86)\Microsoft Office\root\Office16 (Excel 32-bit, 2016 or later)
  4. Remove registry entries
    In Registry Editor:
    • Go to HKEY_LOCAL_MACHINE\SOFTWARE\Nectari Software Inc. and remove the Excel Add-in folder if it exists.
    • Use Edit, then Find to search for and delete any keys for SEI Excel Add-in and then Ebisoft.Excel.

    Use regscanner to find and remove all remaining references to SEI Add-in in the registry.