vendors and customers lost and can't enter any new

Have you run the Verify/Rebuild Data tool? Have you run the Toolhub?

Let's work together to resolve this issue, @pkgallagher.

One of the reasons why you're unable to open your QuickBooks Company file is that program files or QuickBooks installation are damaged. Let's run Quick Fix my Program from the QuickBooks Tool Hub.

1. Close QuickBooks.
2. Download the QuickBooks Tool Hub file. 
3. Open the file you downloaded (QuickBooksToolHub.exe).
4. Follow the on-screen steps to install and agree to the terms and conditions.
5. When the install finishes, double-click the icon on your Windows desktop to open the tool hub.

Then, run repair on your program. Here's how:

1. In the QuickBooks Tool Hub, select Program Problems. Select Quick Fix my Program.
2. Start QuickBooks Desktop and open your data file.

You can also check these articles for more information and troubleshooting steps:

• QuickBooks Desktop Doesn't Start or Won't Open
• What to Do If You Can't Open QuickBooks Desktop

You can always add a comment below if you have any other questions. Stay safe always.

This did not fix the problem.  Are there any other options?

Thanks for the response back, @pkgallagher.

If the Verify and Rebuild and troubleshooting in the QuickBooks Tool Hub didn't work, then I recommend reaching out to the QuickBooks Desktop Support Team. Rest assured, they have the tools to remote a screen-share to look further into this issue. Here's how to get in touch:

1. Open QuickBooks.
2. Go to Help, then select QuickBooks Desktop Help.
3. Choose Contact Us.
4. Give a brief description of your issue, then select Continue.
5. Pick how you want to get contacted. You can refer to this Community article for support hours.

You'll hear from an agent shortly. Once connected, they may perform some troubleshooting with their tools to help isolate the issue and find a solution. 

If you have any additional questions or concerns, please don't hesitate and reach back out! Have a beautiful day.

@pkgallagher 

Call Intuit Data Service to fix it or purchase a 3rd party file repair service.

I would suggest finding a 3rd party provider who can do a repair on the file and restore it from previous backups.

No, How do I do.

Thanks

Hello mammen,

You can look for a third-party application through our page. 

I've added this link as your guide: Apps for QuickBooks Desktop.

Also, feel free to visit our Help Articles page for some information about managing your files.

Let me know if there's anything that I can help. Keep safe!