- Check that you are opening the correct file.
- Check that you have the correct version of Microsoft PowerPoint and the correct software and updated driver.
- Ensure that the presentation file is located in the same folder as the PowerPoint software.
- If the file is located on a shared network drive, verify that all users have permissions to access the file.
- Verify that any connections to linked objects such as Excel spreadsheets or Microsoft Access databases are still valid.
- Test opening the presentation file on a different computer.
- Try to repair the file with the Microsoft Office File Diagnostic tool.
