Hi, I've installed Office 2016 for Business on a users Mac running Yosemite 10.10.5 but Office won't activate with the users credentials, when I enter a password in the sign on page it won't proceed.
-->- In Outlook 2011 and Outlook 2016 for Mac, accounts that you have full mailbox permissions to - including any linked accounts - will not be added to your account list automatically. You will need to subscribe or configure these accounts.
- Considering that even the Microsoft tech support rep gave up, and I finally got Microsoft Office 2016 for Mac to work again on my own, I'm taking the time to put this one in writing in case you.
Symptoms
Office 2016 For Mac Support
In Microsoft Outlook 2016 for Mac, you are repeatedly prompted for authentication while you're connected to your Office 365 account.
Cause
Hi, I've installed Office 2016 for Business on a users Mac running Yosemite 10.10.5 but Office won't activate with the users credentials, when I enter a password in the sign on page it won't proceed.
-->- In Outlook 2011 and Outlook 2016 for Mac, accounts that you have full mailbox permissions to - including any linked accounts - will not be added to your account list automatically. You will need to subscribe or configure these accounts.
- Considering that even the Microsoft tech support rep gave up, and I finally got Microsoft Office 2016 for Mac to work again on my own, I'm taking the time to put this one in writing in case you.
Symptoms
Office 2016 For Mac Support
In Microsoft Outlook 2016 for Mac, you are repeatedly prompted for authentication while you're connected to your Office 365 account.
Cause
This issue occurs because of the presence of duplicate tokens in the keychain.
Office 2016 For Mac Not Signing Invalid
Resolution
To resolve this issue in Outlook 2016 for Mac, install the February 2017 Outlook update (version 15.31.0) from the following Office website:
Workaround
Office 2016 For Mac Not Signing Invitation
To work around this issue, delete any cached passwords for your account, and also delete any modern authentication tokens from the keychain. To do this, follow these steps.
Note
These steps affect all Office applications that use modern authentication.
Quit Outlook and all other Office applications.
Start Keychain Access by using one of the following methods:
- Select the Finder application, click Utilities on the Go menu, and then double-click Keychain Access.
- In Spotlight Search, type Keychain Access, and then double-click Keychain Access in the search results.
In the search field in Keychain Access, enter Exchange.
In the search results, select each item to view the Account that's listed at the top, and then press Delete. Repeat this step to delete all items for your Exchange account.
In the search field, enter adal.
Select all items whose type is MicrosoftOffice15_2_Data:ADAL:, and then press Delete.
In the search field, enter office.
Select the items that are named Microsoft Office Identities Cache 2 and Microsoft Office Identities Settings 2, and then press Delete.
Quit Keychain Access.
Note
When you start Outlook, you are prompted to authenticate.
