Our network domain users who have Windows 7 are unable to load Windows Updates when they click on them in the lower right area of the system tray with the Windows update icon. When they click on it it does nothing, the only way for them to load updates is doing the shutdown and install updates button. But Windows XP users have no issues they can click on the Windows update shield in the system tray, we are running a 2003 Domain. Is there something in Group Policy that might be blocking this?