Hi there Milltown2019,
Thanks for reaching out about getting into your QuickBooks Desktop. It's a great program able to assist you in keeping track of your sales and expenses so you can see the profitability of your company. I can point you in the right direction for assistance with getting into the software.
For assistance with getting into the software, I recommend reaching out to the QuickBooks Desktop support team outside of the Community. They'll be able to view the error with you in a secure setting in order to assist at getting you into your program, as well as the setup, so you can start managing your books in QuickBooks Desktop. You can reach them using the methods provided in the QuickBooks Desktop support policies.
If you have any other questions, feel free to reach out here.