Invalid file format (Error 321) [1 of 2]
A Visual Basic form file is damaged. This error has the following causes and solutions:
The form has a damaged ActiveX control.
Try replacing the ActiveX control on the form.
The number of properties in the current version of the ActiveX control doesn't match the expected number of properties. Try replacing the ActiveX control with an earlier version or later version.
Support and feedback
Have questions or feedback about Office VBA or this documentation? Please see Office VBA support and feedback for guidance about the ways you can receive support and provide feedback.
Feedback
Coming soon: Throughout 2024 we will be phasing out GitHub Issues as the feedback mechanism for content and replacing it with a new feedback system. For more information see: https://aka.ms/ContentUserFeedback.
Submit and view feedback for