A family of Microsoft presentation graphics products that offer tools for creating presentations and adding graphic effects like multimedia objects and special effects with text.
Hello Pascal,
Thank you for posting your question in our community, I suggest you use the online Office repair steps below:
Right-click the Start button Windows Start button in Windows 8 and Windows 10 (lower-left corner) and select Apps and Features on the pop-up menu.
Select the Microsoft Office product you want to repair and select Modify.
Depending on if your copy of Office is Click-to-run or MSI-based install, you'll see the following options to proceed with the repair. Follow the steps for your installation type.
Click-to-run
In the window How would you like to repair your Office Programs, select Online Repair > Repair to make sure everything gets fixed.
MSI-based
In Change your installation, select Repair and then click Continue.
Follow the instructions on the screen to complete the repair.
Below is a reference link to the steps: https://support.office.com/article/7821d4b6-7c1d-4205-aa0e-a6b40c5bb88b
Please let us know if the issue persists after that.
Best Regards, Asher