I'm here to resolve it, Mikethomp128.
The most possible reason why it keeps on switching from multi-user to single-user mode is because of the network setup. We can download and run the QuickBooks File Doctor. This will fix company files and network issues in QuickBooks Desktop. For the detailed steps, please check this article: QuickBooks File Doctor.
Aside from that, we need to make sure that your Database Server Manager is properly set up. This is the tool that allows users to access the company data. Please check this article about QuickBooks Database Server Manager and let's perform all the steps provided.
I'll always be here if you have other questions. Just leave a comment below.
