Hi @Werner Rolfe ,
What version of Office are you using? Please go to File- Account and provide the detail version number here:
Did you install any third add-ins or applications in PC?
Does this problem occur every time or occasionally?
I suggest you install the latest updates for Office and Windows.
Disable add-ins, antivirus software, or you can perform a clean boot:
https://support.microsoft.com/en-us/topic/how-to-perform-a-clean-boot-in-windows-da2f9573-6eec-00ad-2f8a-a97a1807f3dd
Try these methods and checking in to see if the information was helpful. Please let us know if you would like further assistance.
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