2016 v15.35 or later will work, anything older won’t. Related Video Tutorials: A Look At the New TV App in macOS Catalina ― A Look At the New Music App In macOS Catalina ― 10 New macOS Catalina Features You May Not Know About ― What To Do About 32-Bit Apps Before Updating To macOS Catalina. If you install Office 2016 on a Mac, it will include Word, Excel, PowerPoint and One Note. If you need Outlook on the Mac, you will need to subscribe to Office 365. The subscription will also give access to office versions of Access and Publisher 2016. On Windows, you can choose between Office Home and Office Student 2016. 15.35 and later. Office 2016 for Mac is fully supported on macOS 10.13 High Sierra. If you encounter issues using Office 2016 for Mac, please send us feedback so we can address them. In Word, Excel, PowerPoint and OneNote, you can click on the Send a Smile icon in the top-right of the app. For Outlook, choose Contact Support from the Help menu.

Office 2016 For Mac Needs To Be V15 350

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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

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.

Office 2016 For Mac Needs To Be V15 35 Gb

Note

These steps affect all Office applications that use modern authentication.

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.

See 'What version of Office am I using?' if you don't know what version you're on.

Version of Office	Supportability
15.35 and later	Office 2016 for Mac is fully supported on macOS 10.13 High Sierra. If you encounter issues using Office 2016 for Mac, please send us feedback so we can address them. In Word, Excel, PowerPoint and OneNote, you can click on the Send a Smile icon in the top-right of the app. For Outlook, choose Contact Support from the Help menu.
15.34 and earlier	These versions are not supported on 10.13. In some cases, you may not be able to launch the Office apps. For example, users will see the following error message when attempting to launch Outlook 2016 ver. 15.34: If you installed Outlook 2016 ver. 15.34 or earlier, and are not being offered an update to 15.35 or later, download the latest Office 2016 for Mac Suite Installer here.