Logging Into Office 365

Log into Office 365 with your campus email and NetID password.

This KB Article References:
This Information is Intended for:
Instructors, Researchers, Staff, Students
  1. To log in, go to the Office 365 login page
  2. Enter your campus email (i.e. firstname.lastname@stonybrook.edu) and click Next.
     Screenshot of the Office 365 Sign in prompt where you enter your email address
    *If you do not see the Microsoft sign in page, clear your browser cache by pressing Ctrl + Shift + Delete (Cmd + Shift + Delete on Mac) on your keyboard.
  3. Enter  NetID password and click Sign in 
    Screenshot of the Stony Brook University Single Sign On screen
  4. If you get an error when trying to log in, try clearing your browser cache (Ctrl + Shift + Delete on Windows; Cmd + Shift + Delete on Mac) or using a different browser or computer

Log in Through Microsoft Office

If you have an on-campus computer and Microsoft Office 2013 installed, you can access Office 365 from it.

  1. Open a Microsoft Office program (Word, Excel, PowerPoint, etc.)
  2. Click on your name at the top right of the screen and select About me
    Screenshot of the User Profile in Microsoft Office
This Content Last Updated:
01/24/2026

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This KB Article References:
This Information is Intended for:
Instructors, Researchers, Staff, Students
Estimated Read Time:
1 minutes
This Content Last Updated:
01/24/2026