"No Credentials" error when activating Office 2016 for Mac

You might see this error when you try to activate Office 2016 for Mac:

No Credentials. The system requires that you sign on to a valid account.

This might occur because of a problem with the keychain access tool or the Mac OS user profile. Try these solutions to fix the problem.

Reset your keychain in Mac OS X

See this Apple Support article, Resetting your keychain in Mac OS X and follow the steps.

Create a new Mac OS user profile

  1. From the Apple menu, select System Preferences > Users & Groups.

  2. Select Click the lock to make changes, and type your password. Select Unlock.

  3. Select +, and then fill in the new account information, and then select Create User.

Contact support

If you're still having issues with activating Office 2016 for Mac, please contact Microsoft support.

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