Let me provide some information about the discontinuation policy on QuickBooks Desktop (QBDT), Ellie.
Yes, you'll still be able to use the QuickBooks check register without upgrading to the newest release. However, you may have to access your account or company file without utilizing the internet to prevent the system from asking you to upgrade your QBDT version.
If you are using an outdated one, you may experience performance issues. I suggest performing basic troubleshooting steps to resolve these. Additionally, you can utilize the QBDT Tool Hub to address common problems and errors, such as company file issues, network problems, installation issues, and various error codes.
I'll add this article for additional info: QuickBooks Desktop service discontinuation policy.
Moreover, you can browse through these resources to learn about managing your check registers in QBDT:
Don't hesitate to post here in the Community space if you have more questions about the discontinuation policy. Stay safe!
