Outlook For Mac 2016 Keeps Asking For Password

Mac Outlook - Choose Tools Accounts type your Hawkid password in the password field. Close the Accounts window. Clear your cached passwords (Note:.

The second link above solved our problem where Outlook For Mac users (v15.30) was repeatedly prompted for Office 365 service credentials. Our Office 365 setup is synchronizing with our local Active Directory.

1. Quit all office apps (word/excel/powerpoint/onenote/outlook).

2. Open keychain access and delete all “adal” & 'office' entries

3. Relaunch Outlook and provide your credentials.

Side Note: we had already deleted the non-function accounts from Outlook and had to re-add them. That may have also played a role in fixing this problem.

Symptoms

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.

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

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. Realtek 11n usb wireless lan software.

1. Quit Outlook and all other Office applications.

2. 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.

3. In the search field in Keychain Access, enter Exchange.

4. 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.

5. In the search field, enter adal.

6. Select all items whose type is MicrosoftOffice15_2_Data:ADAL:<GUID>, and then press Delete.

7. In the search field, enter office.

8. Select the items that are named Microsoft Office Identities Cache 2 and Microsoft Office Identities Settings 2, and then press Delete.

9. Quit Keychain Access.

   Note

   When you start Outlook, you are prompted to authenticate.