Hi @Kate Harvie ,
Please provide the detail version number of Windows 10 and Office 2019.
Did you get any error message about this problem?
I suggest you try to open in safe mode and check the result.
open-office-apps-in-safe-mode-on-a-windows-pc-dedf944a-5f4b-4afb-a453-528af4f7ac72
Any updates please let me know and I'm glad to help you.
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