Hi robin@concretein,

Thanks for reaching out to us here.  Receiving error messages when attempting to work in Multi User mode in QuickBooks, can have a negative impact on your day.

When you see an error indicating another user is doing something, it typically means the user is working on a task that is limited to one user at a time, even though you're in multi-user mode.  To learn more about errors that block you from accessing your QuickBooks file, click here. 

Should you require additional assistance, please don't hesitate to contact our QuickBooks Desktop specialists at 1-833-317-2226, Mon-Fri: 9am-8pm ET. They'll be able happy to work with you personally, and get you back to business as soon possible!

Feel free to reach out again, with any other questions.  We would be glad to help!