Unknown error' or 'clock error' when you activate Outlook 2016 for Mac See Remove Office license files on a Mac for directions on how to check which license you're using and how to reactivate. If you own multiple licenses and have installed using the incorrect one, or you had a one-time install of Office for Mac and then purchase Microsoft 365, you might need to remove licenses attached to your suite of Office and reactivate to ensure you're getting all the benefits of Microsoft 365.

Fix it using the instructions in the Fix permissions for the PriviligedHelperTools folder below. If there is a red dot/stop icon next to the name, it is not accessible. Open Finder, click Go (In the menu bar) > Computer.įind the PriviligedHelperTools folder. If you're trying to activate a one-time purchase of Office for Mac and you get the above error message, this is because your PriviligedHelperTools folder is incorrectly not accessible to your user account.įind out if your PriviligedHelperTools folder is not accessible: We’ve confirmed your purchase, but in order to activate you will need to download a version of Microsoft 365 for Mac from this Link' One-time purchase of Microsoft 365 for Mac confirmed, but still can't activate In the case of any of the above, follow the steps in Office for Mac repeatedly requesting keychain access to reset your keychain permissions. Other symptoms may be that you see Microsoft 365 for Mac repeatedly asking you to sign into your account or you receive an 'Authentication Expired' error. If you see repeated prompts to grant access to the keychain when starting an Microsoft 365 for Mac app, Office may have been moved to a location other than the default /Applications folder. Office keeps asking me to sign in / 'Authentication Expired' error

To fix this issue, please follow the steps in Installation limit reached error when activating Office for Mac. Visit your account page to manage your settings and then return here to retry activation.' Your account has been used to activate Office on the maximum number of computers allowed.

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