
Dear @Doug Anderson,
Good day! Thank you for posting your question in the Microsoft Q&A forum.
We apologize for any inconvenience you may encounter when using our services/ products. Based on your description, kindly try these following steps:
Repair Office Installation
- Use Control Panel > Programs > Programs and Features > Microsoft Office > Change > Repair or Online Repair (please try both of these)
Run PowerPoint in Safe Mode
- Press Win + R, type powerpnt /safe, and press Enter. This disables add-ins. Check Guest Organization Access
- If the issue disappears, it’s likely caused by an add-in. Disable them via:
- File > Options > Add-ins > Manage COM Add-ins > Go
Clear Microsoft Office cache
- If the cache file is corrupted, access may be blocked. To delete: Press Windows + R and type %localappdata%\Microsoft\Office\16.0\OfficeFileCache to delete all files in that folder.
Uninstall and Reinstall Office Installation
- Go to Settings > Apps > Installed Apps
- Find Microsoft Office or Microsoft 365 in the list.
- Click Uninstall and follow the prompts to remove it completely.
- Reinstall the Microsoft Office apps.
- After installation and activation, restart your PC to ensure all components are properly loaded.
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