You don't need to uninstall your QuickBooks Desktop on the old computer to use it on the new one, @shawn2020. Let me share some information about this one below.
Please ensure that you're not using QuickBooks Desktop simultaneously on multiple computers, Additionally, it's important to create a back up your company file before transferring so your data and supporting files are saved and can be restored any time.
Moreover, the error message you encountered when using the QBDT appears when opening the company file for the first time and a result of incorrect Windows folder location permissions, firewall settings, or internet configurations.
To get rid of it, right-click the QuickBooks icon on your desktop and select Run as Administrator.
Furthermore, you can manage your QBDT account and services with the Customer Account Maintenance Portal (CAMPs). You might want to check out this article in completing the steps: Manage your QuickBooks Desktop subscriptions and services.
Keep this thread open for future questions or concerns about your account in QuickBooks Desktop. My team and I are here to ensure you feel supported and confident in managing your finances. We look forward to assisting you.
