I try to open  exist my company file now. But it be locked. would you help?

Hello there, @Lili1330.

Let me help you diagnose the issue if you can't open your company file. Please make sure to log in as an administrator. 

Let's run a QuickBooks Tool Hub to fix the error.

1. Download and install the latest QuickBooks Tool Hub.
2. Once done, open the file and select Program Problems.
3. Select Quick Fix My Program.
4. Start QuickBooks Desktop and open your data file.

On more note, please refer to this page for more information on how to fix your company errors: Fix issues when QuickBooks has stopped working.

Additionally, learn more about system operating requirements to have a better experience while navigating your QuickBooks Dekstop account: System requirements for QuickBooks Desktop 2022.

I'm here to assist you with any further questions or concerns you may have. Don't hesitate to reach out. Wishing you a successful day in your business endeavors!

@Lili1330 

Can you open the sample file?