PowerPoint found a problem with content... can attempt to repair the presentation

Environment
  • Microsoft PowerPoint

Content
Colleague got this below question each time opening a PowerPoint file. Showing the Content not normal even "Repair":
PowerPoint found a problem with content in C:\User\User1\Desktop\fileA.pptx.
PowerPoint can attempt to repair the presentation.

If you trust the source of this presentation, click Repair.

"Repair"    "Cancel"

To solve it, went to right click the PowerPoint File. Ticked "Unblock".
This file came from another computer and might be blocked to help protect this computer.






References


Update