Opening first a test company, closing it then opening the "networked" company file is a workaround.

Also deselecting "show home page" as DUCKS495 posted worked for another computer that later developed the same problem. Thank you "DUCKS495"

Go to Edit, Preferences, Desktop View

- Multiple Windows (if that's what you like) - Selected

- Select Save current desktop

- Deselect Show Home page when opening a company file