BUG
When launching ArcMap or ArcCatalog, the application opens minimized on the taskbar and can only be maximized. When clicking the restore button on the window, it becomes minimized on the taskbar. This behavior can occur when switching from dual monitors to a single monitor and the application moves off the screen.
To resolve the issue, use the workaround below.
Get help from ArcGIS experts
Download the Esri Support App