I have exactly the same issue. I started removing AppStacks one by one, but as soon as I have any stack the problem happens. So it is not a particular appstack that I can find, looks like more when any attached appstack in general it breaks. Interesting that is happening only in Excel, but not in Word. Is there some kind general exclusion for these v4 drivers that require additional apps to be called to get the drivers? I have added XeroxPrintExperience.exe to HookInjectionWhitelist registry, but it doesn't seem to make any difference. There a few more Xerox executable in the program files\xerox\xeroxprintexperience folder, but not sure which one to exclude. any help is much appreciated.