Have you ever ran into a situation where you held down the right mouse button a bit too long on an Advance Steel tool palette and accidentally clicked on some red x's? Next thing you know, you are missing some tools.
Don't panic! You do not need to recreate those icons. Here is how to reset the tool palettes back to default.
Simply close out of Advance Steel and go to C:\ProgramData\Autodesk\Advance Steel 2019\USA\Steel\Support\Toolbars (file path is similar for other year versions of Advance Steel). Delete or rename the User.xml file that corresponds to the tool palette you are needing to reset. These files will be recreated once you relaunch Advance Steel. Example:
Open Advance Steel and your tool palettes should be back to normal.