Colligo does not appear on the ribbon menu after reinstallation

This article applies to:
8.1.x Email Manager for Outlook

Issue: After reinstalling Colligo Email Manger 8.1.x, Colligo does not appear on the ribbon menu.


  • A clean install does not solve the issue.
  • Colligo does not appear in the Customize Ribbon menu.
  • The Colligo folder is not created in %LocalAppData%.
  • There are no error logs or indications that the Colligo Add in failed to load.

Possible Cause:
Colligo was uninstalled by removing the Add in through Outlook's Options > Add ins screen. The led to the creation of a new registry key that prevents future loading of the Colligo Add in.


  1. Run Outlook as an Administrator in order to successfully delete the Colligo add in.
  2. Delete the Registry key Engage.OutlookAddIn from this specific location:
    • 32 bit Office: Computer\HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Office\ClickToRun\REGISTRY\MACHINE\Software\Wow6432Node\Microsoft\Office\Outlook\Addins\Engage.OutlookAddIn
    • 64 bit Office: Computer\HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Office\ClickToRun\REGISTRY\MACHINE\Software\Microsoft\Office\Outlook\Addins\Engage.OutlookAddIn

Note: This key does properly exist in other locations in the registry, but only these particular locations block the loading of the Colligo add in.

Update History:
10-Oct-2018 Article created.

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