Welcome to the thread, @Kfrankowiak. I want your issue get's resolved.

To ensure we're on the same page, do you mean to say you can't log in to your company file in QuickBooks Desktop? Can you tell me more about it? You can add error messages, screenshots, or any important details that can help us fix the problem. 

In the meantime, I recommend checking this helpful article for guidance on how to fix general problems when a company file won't open: What to do if you can't open your company file in QuickBooks Desktop.

We are looking forward to hearing from you. Any extra information is appreciated. Have a great day!