Microsoft Outlook 2016 Mac Server Error

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Symptoms

In Microsoft Outlook 2016 for Mac, you are repeatedly prompted for authentication while you're connected to your Office 365 account.

Cause

Microsoft Outlook 2016 Mac Server Error Version

This issue occurs because of the presence of duplicate tokens in the keychain.

Microsoft Outlook with an Office 365 subscription is the latest version of Outlook. Previous versions include Outlook 2013, Outlook 2010, and Outlook 2007. Follow Office. Apr 26, 2016  The Outbox in Outlook is a major pain indeed! The solution to this type of issue is to display the Activity window in Outlook, and when the app attempts to send the message again, click the little x at the right of the message in the activity window to delete it. Get help with your Outlook 2016 for Mac questions, and see what others are asking. May 20, 2019 Install the December 13, 2016 update for Outlook 2016 for Mac (version 15.29.0) or a later update, and then follow the steps to configure the Outlook 2016 for Mac Autodiscover redirect warning behavior when you connect to Office 365. For information about this update or to download the Outlook update package, click the following articles.

Error

Resolution

Microsoft Outlook 2016 Mac Server Error Codes

To resolve this issue in Outlook 2016 for Mac, install the February 2017 Outlook update (version 15.31.0) from the following Office website: Microsoft office 2010 compatibility pc mac.

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

Microsoft powerpoint 16.32 installer mac. These steps affect all Office applications that use modern authentication.

Microsoft Outlook 2016 Mac Server Error Windows 10

  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.