License issue?

@DunTellYou  there are many different ways to resolve this. It might have been a slight over-sight in not seeing the 'Microsoft Word' in the screenshot as @Tariq Ahmad likely didn't see that. I didn't see it either before I double-checked the pop-up!

It's unusual to encounter an "Acrobat Pro license expired" message in Microsoft Word when you're not actively editing PDFs but simply trying to open an embedded PDF. This suggests that Word might be attempting to utilize the licensed Acrobat Pro functionality to render or interact with the embedded object, even for viewing. A potential solution is to ensure that your default PDF viewer in Windows is set to a different application, such as the built-in Microsoft Edge PDF reader or another free PDF viewer. This might prevent Word from relying on the expired Acrobat Pro license when handling embedded PDFs. To do this, search for "Default apps" in your Windows settings, then navigate to "Choose default apps by file type," find the ".pdf" extension, and change the default application.

If this resolves the issue, you might consider downloading the free Adobe Acrobat Reader, which is specifically designed for viewing, signing, and annotating PDFs without requiring a paid license. Setting the free Acrobat Reader as your default PDF viewer could provide a stable and license-independent way for Word to handle embedded PDFs in the future.