Office 365: Activating/Re-activating ProPlus


This article outlines some issues with activating Office 365 Pro Plus and how to fix these issues.


If your installation of Office 365 ProPlus is no longer activated, please follow the steps below to re-activate it.

  • When prompted, click Sign In
  • Click Continue
  • At the Activate Office window enter your, for example:
  • Click Next
  • If you receive the message, "This Computer has been added to your account", press OK and skip the remaining steps.
  • If you are taken to a USNH branded login page
    • Enter your USNH Password at the Sign-in Page and verify your identity if required.
  • Your Office product will now be Activated

Additional troubleshooting steps:

  • Verify that your account is still active in Office 365 by signing in to  If your account is no longer active, you are no longer entitled to an Office 365 subscription through your USNH account.
  • If you are a VPN user, try the activation steps above while DISCONNECTED from the VPN.
  • Repair your Office 365 ProPlus application.


Need additional help?

For assistance concerning site creation, content sharing, file synchronization, or other common SharePoint, OneDrive, Teams, or Office app activities, we recommend our Microsoft 365 Learning sites:

Learn more about the great tools our Microsoft 365 Learning sites offer!

Visit the Technology Help Desk Support page to locate your local campus contact information or to submit an online technology support request.  For password issues you must call or visit the Help Desk in person.  

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Article ID: 1386
Fri 7/19/19 6:03 PM
Mon 5/6/24 10:59 AM
Applicable Institution(s):
Keene State College (KSC)
Plymouth State University (PSU)
University of New Hampshire (UNH)
USNH System Office