After updating to office version: https://docs.microsoft.com/en-us/officeupdates/semi-annual-enterprise-channel#version-2002-january-12
On some of the machines Microsoft.Office.Interop.PowerPoint.ApplicationClass.Quit()
is failing with following error : System.Runtime.InteropServices.COMException (0x80004005): Application (unknown member) : Failed. at Microsoft.Office.Interop.PowerPoint.ApplicationClass.Quit()
It works when at least one PPT is already open.
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