
Good day!
Welcome to Microsoft Community. Thank you for sharing your concern with us today and we hope that all is well. I'm sorry to hear about the issue you're experiencing with PowerPoint crashing when exporting to MP4. Since you've already tried several troubleshooting steps, I recommend trying the following additional steps:
- Check for Windows updates: Make sure your Windows 11 operating system is up to date by checking for any pending updates in the Settings app.
- Repair Microsoft 365: You can try repairing your Microsoft 365 installation by going to Control Panel > Programs > Programs and Features, selecting Microsoft 365, and choosing the option to repair the installation.
- Check for conflicting software: Sometimes third-party software can interfere with PowerPoint's export process. Try temporarily disabling any antivirus or security software running on your system and see if that helps.
- Test on a different user account: Create a new user account on your Windows 11 system and try exporting the PowerPoint presentation to MP4 from that account. This can help determine if the issue is specific to your user profile.
Regards,
Fritz-Bald
Microsoft Community
Moderator