Good day, @ameyerovich1.

Let me join in this conversation and share with you some basic troubleshooting to fix this concern. 

There might be a data issue in your company file that causes the check numbers to be auto-assigned. 

If you already run the verify and rebuild data tools yet still getting the same result, I'd recommend running the repair tool for QuickBooks Desktop for Windows. This tool can help fix common errors right away so you can get back to your business. 

Here's how:
 

1. If you haven't already, back up your company file.
2. Restart your computer. This makes sure there are no programs that may affect the repair.
3. Open the Windows Start menu and select Control Panel.
4. Choose Programs and Features, then click Uninstall a Program.
5. Select QuickBooks from the list of programs and click Uninstall/Change.
6. Proceed by clicking Continue, or Next.
7. Select Repair and click Next.
8. Once it's done, select Finish.

You can also update your QuickBooks to the latest release. This makes sure you have the most recent fixes and security updates.

If the issue persists, I'd recommend reaching out to our Customer Support Team. This way, they can check your company file and help you resolve the error. 

I'm also including our Help articles for related references in managing your account and transactions. 

The Community always has your back, so please let me know if you have any other questions. I'll be more than happy to help. Keep safe.