outlooktechsupport

INTRODUCTION This article describes how to troubleshoot the following kinds of issues in Microsoft Outlook when it's used together with Office 365:   Outlook stops responding (hangs). Outlook crashes even though you aren't actively using it. Outlook crashes when you start it. PROCEDURE To help troubleshoot Outlook issues in an Office 365 environment, follow these steps.   Step 1: Investigate possible issues caused by add-ins Exit Outlook. Open a  Run  dialog box. To do this, use one of the following procedures, as appropriate to your version of Windows:   If you're running Windows 10, Windows 8.1, or Windows 8, press the Windows logo key+R. If you're running Windows 7, click  Start , type  Run  in the Search box, and then click  Run . Type  Outlook /safe , and then click  OK . If the issue is fixed, click  Options  on the  File  menu, and then click  Add-Ins . Select  COM Add-ins , and then click  Go . Click to clear all the