Since about a week ago I've had problems opening Excel files on my work computer. However I try to open a file, whether from File Explorer, taskbar, start menu, desktop shortcut etc., Excel will open but no file is displayed, everything is greyed out. The only way I can access a file is to open Excel first and do it that way, which is fine but a bit of a pain. Word and PowerPoint are working ok so the problem seems to be specific to Excel. I'm not aware of any recent updates that may have been the cause.
Am using Office Home & Business 2013 on Windows 10, since it's a work computer I don't have admin privileges so that may limit what I can do. Our IT guy wasn't able to help but maybe someone here can?