Accounts Settings window does is blank. Office 2011 Outlook

The account settings window in Office 2011 appears blank. The box appears but it is not showing anything other than its white box. This occurs when opening the settings pane by which ever method, either from the tools menu or from the context menu on the account folder in the main navigation pane. I have only just noticed this because I rarely need to change any account settings. Main Identity rebuild didn't solve the issue all updates have been applied. Any fixes for this behaviour?