
Hi @Dummies on the Run ,
Could you please check the Office version number and Office name?
Does this issue occur with other computers?
For more details, please take a screenshot of the interface after opening one PDF file.
Besides, do all PDF files can not opening via your Word?
I suggest you go to Properties, switch "Open with" to one browser application, then click on one PDF file for a check.
Any updates, welcome to post back.
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