I am unable to activate my office 365 account from my MAC.

Jeff Howren 0 Reputation points
2026-08-24T17:29:15.8633333+00:00

My Mac is update to date with the OS Tahoe 26.6.2 installed. Microsoft apps are up to date, Word is currently MS Word for Mac, Version 16.112.1. This issue just stared today - I have been able to activate prior to today.

I checked my login and the id helper says my id is good.

Microsoft 365 and Office | Install, redeem, activate | Other | MacOS
0 comments

2 answers

Sort by: Newest
Most helpful Newest Oldest
  1. Kai-H 26,760 Reputation points Microsoft External Staff Moderator
    2026-08-25T08:29:23.2833333+00:00

    Hi, Jeff Howren

    Because activation stopped suddenly while the apps and macOS are current, this may be a connection, macOS permissions, or temporary Microsoft service issue rather than an incorrect account.

    Besides the solutions provided by the Q&A Assist, here are some suggestions you can try:

    Temporarily turn off any VPN, proxy, antivirus web filtering, or network security app. Then connect the Mac to a different network, such as a phone hotspot, and try activation again. Office must be able to contact the online licensing service.

    Open System Settings > General > Date & Time and enable automatic date and time. An incorrect clock can prevent secure sign-in and activation.

    Check the https://portal.office.com/servicestatus. If an activation or sign-in incident is listed, wait until it is resolved before making further changes.

    In System Settings > General > Sharing, give the Mac a simple computer name containing only letters and numbers, restart it, and try again. Invalid characters in the Mac name can cause activation error 0xD000001c.

    Create a temporary local administrator account under System Settings > Users & Groups, sign into that Mac account, and test Word there. This can identify a damaged or read-only macOS user profile.

    If none of these work, please post the exact activation message or error code, since codes such as 0xD000000C and 0xD0001043 require different fixes.

    Thank you for your patience in reading, I hope this information has been helpful to you. 

    If the answer is helpful, please click "Yes" and kindly upvote it. If you have extra questions about this answer, please click "Comment."    

    Note: Please follow the steps in our documentation to enable e-mail notifications if you want to receive the related email notification for this thread.

    Was this answer helpful?

  2. AI answer

    2026-08-24T17:29:33.0366667+00:00

    Since activation worked before and the issue started suddenly on a fully updated Mac, use this Mac-specific activation path:

    1. Verify the licensed account is the one being used in Office.
      • In Word, sign out, then sign back in with the Microsoft account associated with the Microsoft 365 subscription.
      • If prompted, choose Sign in with another account.
      • For consumer subscriptions, confirm the license appears at https://account.microsoft.com/services.
    2. Try normal activation again.
      • Open Finder > Applications.
      • Open Microsoft Word.
      • In the What’s New window, select Get Started.
      • On Sign in to activate Office, select Sign in.
      • If no sign-in prompt appears, open a blank file and go to File > New from template > Sign in.
    3. If Office says activated before but still asks to activate, fully quit and reopen the app.
      • In Word, select Word > Quit Word.
      • Reopen Word and check whether the activation prompt clears.
    4. Reset the stored Office credentials in Keychain.
      • Open Spotlight.
      • Search for and open Keychain or Keychain Access.
      • Search for Office.
      • Delete the Office data license file.
      • Then try activation again.
    5. If the activation loop continues, remove old license data and reactivate.
      • Run the Microsoft 365 Activation troubleshooter from https://aka.ms/SaRA-OfficeActivation-sarahome.
      • If needed, run the License Removal Tool, restart the Mac, then open any Office app and sign in again to reactivate.
    6. If the symptom is repeated sign-in prompts or Authentication Expired, check whether Office was moved from the default /Applications folder.
      • That condition can cause repeated keychain prompts and sign-in failures.
      • Reset keychain permissions using the Microsoft guidance for repeated keychain access.
    7. If the Mac shows Office in view-only mode after the recent update, remove Office license files, restart the Mac, and reinstall Office from the Microsoft account page, then sign in again.

    Important:

    • Deleting Keychain items or removing license files resets Office activation on the Mac and requires signing in again.
    • If the account is a work or school account and no license is assigned, the organization’s admin must assign the license.
    AI-generated content may be incorrect. Read our transparency notes for more information.

    Was this answer helpful?

Your answer

Answers can be marked as 'Accepted' by the question author and 'Recommended' by moderators, which helps users know the answer solved the author's problem.