Thanks for sharing the details you've perform to resolve this, @ABrooks.
The error 6209 indicates that you're unable to open your company file in your QuickBooks Desktop (QBDT). Let me share some additional troubleshooting steps to get you back in working order. I suggest, running the repair tool to fix this error right away.
Before doing so, I recommend to back up your company file for safety reason in case we run into problems. Once done, you can proceed running the repair tool by going through these steps:
- Restart your computer.
- Open the Windows Start menu, then select Control Panel.
- Select Programs and Features then Uninstall a Program.
- Click QuickBooks from the list of programs, then click Uninstall/Change.
- Select Continue, or Next.
- Click Repair, then Next.
- Once it's done, select Finish.
- Then, Update your QuickBooks to the latest release to have the most recent fixes and security updates.
Here's an article you can read for more detailed steps: Repair your QuickBooks Desktop for Windows.
I'm also adding these article that provides additional troubleshooting steps in case the issue persists: Resolve Error -6000, when opening a company file.
You might also want to check our Help articles page and read some great articles for future reference. From there, you'll learn some best practices in managing your QuickBooks Desktop (QBDT).
Let me know if there's anything else you need help with. I'm always here ready to back you up. Take care and always stay healthy.
