Error opening workbook. Make sure Excel is installed

I solved the problem the following way:

As I read that the problem was probably in regedit, I tried to find multiple entries of office but found nothing. Instead if I looked deeper into the TypeLib-key for Excel and Outlook there was a folder named “0” and inside that folders named Win32 and Win64. The problem is that I only have a Win64-installation of office, so I changed both keys values to match my current installation of EXCEL.EXE and MSOUTL.OLB. Now UiPath finds them.

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