Start by right-clicking the start button on the task bar and click on Run to open the Run command box. When it open, type Outlook.exe/safe in the text box and click OK. This will open Outlook in Safe mode. If Windows is unable to open Outlook in safe mode, try using the full process – C:\Program Files\Microsoft Office\OfficeXX – XX being your version number. Opening Outlook in safe mode enables the email program to launch with a limited set of features and no extensions.