I have an issue with a client running Windows 7 Pro and Office 2010. He regularly has several excel workbooks open and often minimizes them to work in other applications or access other shortcuts on the desktop. Periodically, he finds that he cannot restore any Excel workbooks after minimizing them to the taskbar. The Excel icon in the taskbar shows a hover preview of each workbook that's opened, but clicking on them does not bring them to the front to work in. Right-clicking on the workbook and choosing Restore or Maximize doesn't do anything either. Once they're minimized to the taskbar, they're stuck!
Right-clicking and closing all the workbooks is the only way to resolve the issue. I know there aren't dialog boxes stuck or anything because it prompts to save the workbooks and the closes properly.
Also, the issue does not occur every time he minimizes the workbooks, but just a few times a day.
Has anyone experienced any similar issues?