I need help
I am getting the following error:
Unable to cast COM object of type 'System.__ComObject' to interface type 'Microsoft.Office.Core.IRibbonUI.'
The OnePlaceMail Outlook add-in encountered an unexpected issue.
Error: Unable to cast COM object of type 'System.ComObject' to interface type 'Microsoft.Office.Core.IRibbonUI'. This operation failed because the QueryInterface call on the COM component for the interface with IID '{000C03A7-0000-0000-C000-000000000046}' failed due to the following error: Library not registered. (Exception from HRESULT: 0x8002801D (TYPEELIBNOTREGISTERED)).
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AdminSupport (Admin, OnePlace Solutions) commented
Hi Uche,
Thanks for your comment.
The root issue of this error is that the Office version reference for a key in the registry is pointing to an incorrect value.
I have emailed you the instructions to resolve this issue.
- Dylan