A family of Microsoft word processing software products for creating web, email, and print documents.
Hi,
It seems like Word is trying to open a PDF.
Simply select a file > Right-click it and choose Properties.
On the general tab, click Change besides open with and choose Adobe reader.
I hope you find this information useful. If you have any more questions, don't hesitate to reach out. Otherwise, please take a moment to accept the answer. Wishing you good luck!