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I can't sign in to PowerPoint

etsuko 40 Reputation points
2026-04-16T00:23:15.2133333+00:00

I purchased Microsoft Office Home 2024 yesterday and installed it on my Mac. I was able to sign in to Excel and Word, but I can't sign in to PowerPoint.

Microsoft 365 and Office | PowerPoint | For home | MacOS
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Answer accepted by question author

Sumit D - IA 170.3K Reputation points Independent Advisor
2026-04-16T01:06:19.2733333+00:00

Hi,

Can you please share a screenshot of the error message while signing in?

I’m eager to hear back and work together to find a solution.

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Answer accepted by question author

AI answer

2026-04-16T00:23:35.2333333+00:00

Try the following steps on the Mac to resolve sign-in issues with a single Office app like PowerPoint when Word and Excel work:

  1. Quit all Office apps (Word, Excel, PowerPoint, Outlook, OneNote).
  2. Remove the Office apps:
    • Open Finder → Applications.
    • Use Command + click to select all Microsoft 365/Office for Mac apps (Word, Excel, PowerPoint, Outlook, OneNote).
    • Ctrl+click the selection and choose Move to Trash.
  3. Remove Office app data for a clean reinstall:
    • In Finder, select Go → Go to Folder… and enter: ~/Library/Containers/
    • Delete the folders starting with:
      • com.microsoft.Word
      • com.microsoft.Excel
      • com.microsoft.Powerpoint
      • com.microsoft.Outlook
      • com.microsoft.OneNote
    • Go back to Library, open Group Containers, and move these (if present) to Trash:
      • UBF8T346G9.ms
      • UBF8T346G9.Office
  4. Reinstall Office from the account that owns Office Home 2024:
    • Sign in at the services page for the Microsoft account used to purchase/activate Office.
    • Download and run the Office installer from there.
  5. After installation, open Word first and sign in with the same account. Once Word is activated, open PowerPoint and confirm it now signs in and activates correctly.

If PowerPoint still cannot sign in while Word/Excel work, check for any emerging Mac-specific installation or activation issues and follow the troubleshooting steps for Office for Mac.


References:

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