Outlook Not Responding: Microsoft Outlook is not responding due to stuck at processing (or) stopped working (or) freezes (or) hangs. If an Outlook not responding the screen says that then it can close for to fix the safe Mode on Outlook. After that, it can open normally to fix the problem. The outlook is a personal information manager from Microsoft. It is developed by Microsoft Corporation. The outlook is one of the Microsoft office suites. Microsoft outlook has replaced With previous Microsoft scheduling and programs. Versions of Microsoft Outlook include that Outlook for phones and tablets, Windows, Mac, office, MS-DOS like that.