That's the point of the feature.
Intuit has stated it is their legal responsibility to save you from yourself, to force you to use a strong password when your file contains sensitive information. I think this is likely a gross misinterpretation of some US Federal regulation, but no one at Intuit seems interested in reviewing the feature.
Thank you for your response. So, I have no choice. If I want to open my company file again I must create a password first. Is that right?