How to open Outlook in Safe mode in Windows 8/10

If Outlook won't open or running slow, try opening it in safe mode, which disables add-ins and isolate if there is any issue with the add-ins. Here are the steps:

• 1. Right-click the Start button at the bottom left, and click Run  or Press Windows Key + R together on the keyboard to bring up the Run prompt.
• 2. In the Run box, Type Outlook.exe /safe, and click OK.
• Tip: If Windows can't find Outlook.exe /safe, try using the full path to Outlook (for example C:\Program Files\Microsoft Office\OfficeXX, where XX is your version number).