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Salesforce for Outlook error "Library not registered (Exception from HRESULT: 0x8002801D (TYPE_E_LIBNOTREGISTERED))"

Knowledge Article Number 000199110

After installing Salesforce for Outlook, you get a pop-up window with an error while attempting to launch it.

The error reads: 

Unable to cast COM object of type 'Microsoft.Office.Interop.Outlook.ApplicationClass' to interface type 'Microsoft.Office.Interop.Outlook._Application.' This operation failed because the QueryInterface call on the COM component for the interface with IID '{00063001-0000-0000-C000-000000000046}' failed due to the following error: Library not registered. (Exception from HRESULT: 0x8002801D (TYPE_E_LIBNOTREGISTERED)).


This issue is due to the version reference for the TypeLib created by the Outlook installation is pointing to an incorrect value. You can resolve the error by following the instructions below.

Resolving the Error


1. Close Outlook.
2. Fully uninstall Salesforce for Outlook.
3. Check the Interface. 
-In the Windows registry (Press the Windows key on your keyboard with the R Key to bring up the Run  box then type in Regedit and press Enter), find the default entry in the below key to confirm the correct Outlook version reference.


For example: 

  • 9.4 for Outlook 2010 or 9.5 for Outlook 2013: HKEY_CLASSES_ROOT\Interface\{00063001-0000-0000-C000-000000000046}\TypeLib 
  • For a 64-bit window: HKEY_CLASSES_ROOT\WOW6432Node\Interface\{00063001-0000-0000-C000-000000000046}\TypeLib

64-bit window

Important: Be sure to check the version of Outlook: 
  • Outlook 2007 - Version 9.3
  • Outlook 2010 - Version 9.4
  • Outlook 2013 - Version 9.5
  • Outlook 2016 - Version 9.6


4. Check and correct the TypeLib by navigating to this registry key: HKEY_CLASSES_ROOT\TypeLib\{00062FFF-0000-0000-C000-000000000046} 
5. Delete the version keys (e.g. 9.5 OR 9.4) for any version of Outlook that is NOT installed on the user machine based on the above version table.


For example: If the user is NOT using Outlook 2013 then remove the "9.5" entry or If NOT using Outlook 2010 then remove the "9.4" entry only. 
DO NOT DELETE the entry for the version we found in configured in Step #3

User-added image


6. Remove the Redemption keys in following locations in the registry: 

  • HKEY_CURRENT_USER\Software\Redemption 
  • HKEY_CURRENT_USER\Software\Redemption * 
  • HKEY_CURRENT_USER\Software\Redemption * * 
  • HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Redemption 


7. Run a repair on Office installation.
8. Restart the machine.
9. Reinstall Salesforce for Outlook.
10. Launch Salesforce for Outlook. 

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