Lotus Notes Error: Class not registered Exception from HRESULT 0x80040154 REGDB_E_CLASSNOTREG

Error: Retrieving the COM class factory for component with CLSID {29131539-2EED-1069-BF5D-00DD011186B7} failed due to the following error: 80040154 Class not registered (Exception from HRESULT: 0x80040154 (REGDB_E_CLASSNOTREG))


This is an error thrown from the IBM Lotus Notes Client Library. Because it is caused by the IBM Lotus Notes Client Library, we are unable to create a fix. However, we have found that in some cases, one of the following actions may help to resolve this error:

  • Restart the Extractor machine, and resubmit migrations.
  • Uninstall the IBM Lotus Notes Client using the IBM Notes Install Cleanup Executable (NICE) tool, reinstall the most recent IBM Lotus Notes Client, and then resubmit migrations.


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