locate themes in PowerPoint

At the bottom of the Themes gallery dropdown, check whether you see an "Enable content updates" option. If it is available and not grayed out, select it to enable content updates.

Thank you. Is your Powerpoint provided by your Work?

I look forward to hearing from you to get the results of the troubleshooting.

Thank you, Rebekah. Please try the command then and let me know.

Hi,

The following should work:

• Close all Microsoft Office applications, including PowerPoint.
• Open Finder and navigate to Applications → Microsoft PowerPoint → Show Package Contents → Contents → Resources → Themes.
• Copy the Themes folder to your Desktop or another safe location to create a backup.
• Open Terminal from Applications → Utilities → Terminal.
• Enter the following command and press Enter:

defaults write com.microsoft.PowerPoint.plist DisableThemedView -bool NO

• Launch PowerPoint for Mac.
• Create a new presentation and navigate to the Design tab. The available themes should now be displayed.

I look forward to hearing from you to get the results of the troubleshooting.