Office for Mac repeatedly requesting keychain access

If you see repeated prompts to grant access to the keychain when starting an Office for Mac app, Office may have been moved to a location other than the default /Applications folder.

The keychain prompt on Office 2016 for Mac
  1. Select Always Allow when prompted. You may encounter this dialog up to three times per app.

  2. The application will now start successfully.

    Note: If you clicked on Deny by accident, follow the instructions below to restore your keychain permissions.

Restore your keychain permissions for Office for Mac

If the above did not work, Office may have trouble accessing the keychain and you'll need to restore keychain permissions for Office for Mac. In these cases, you may see:

  • The keychain access prompt every time you launch any Office application, even though you previously selected Always Allow.

  • A prompt to sign in to your Microsoft Account or Office 365 for business account every time you launch any Office application.

  • An “Authentication Session Expired” error message after signing in to your Office applications.

Follow these directions to restore your keychain permissions:

  1. Quit out of all Office for Mac apps such as Word, Excel, PowerPoint, Outlook, and OneNote.

  2. Search for "keychain" in spotlight and launch the Keychain Access app.

  3. Select the login keychain in the left pane > click the large padlock icon to lock the keychain.

    Note: The padlock will animate to a locked position and may take several seconds to complete if other apps are running.

    Click the large padlock icon to lock the keychain
  4. Launch any Office app, such as Word.

  5. You'll receive a prompt requesting permissions to access the keychain. Enter your Mac admin account password and click Always Allow. This prompt may appear multiple times.

  6. If prompted, sign in to your account associated with Office.

  7. Once you have successfully signed in, quit out of the application and open it again. You should be able to open the app without any more prompts.

More info

If your Mac keeps asking for the login keychain password (Apple Support)

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