I created a workbook in Excel on a Mac with 15 tabs, meaning that not all tabs are visible at the bottom of the screen. I can use the arrows in the bottom left corner of the window to advance through the tabs and change the series of tabs visible at the bottom on a Mac. However, on a PC, the arrows at the bottom do not change which tabs are visible and do not allow me to advance through the tabs. This is specific to this workbook on a PC; other workbooks on the PC do allow me to use the arrows in the bottom left to see and move through tabs. I know there are workarounds like right-clicking and seeing a menu of all tabs and keystrokes to advance through all tabs. But I am wanting to know the cause and solution of the bottom left arrows not working.