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c#office-interop

c# powerpoint interoperability: Failed Powerpoint automaion for smart art in office 19. works fine with ms office 16

When perform redaction on smart art object it gives below error: ComEXception (0x80040155): Interface not registered Failed to find proxy registration for IID: {} at Microsoft.Office.Core.TextFrame2.get_TextRange()

It was working fine with ms office 2016. but, facing the above error in a machine with ms office 2019.

any suggestions?

Thanks!

Solution

  • Most probably there is a problem with windows registry keys for Office applications. I'd suggest repairing Office to recover the broken records in the windows registry. For example, you may find the following similar threads helpful: