Microsoft Word For Mac Version 15.38



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Word 2016 for Mac Word for Mac 2011 More. Support for Office 2016 for Mac ended on October 13, 2020. Upgrade to Microsoft 365 to work anywhere from any device and continue to receive support. If you want your document to be read but not edited, you can save it as a PDF file. When you do, the PDF will retain your formatting. Start quickly with the most recent versions of Word, Excel, PowerPoint, Outlook, OneNote and OneDrive —combining the familiarity of Office and the unique Mac features you love. Work online or offline, on your own or with others in real time—whatever works for what you’re doing. Version 15.38: Office Suite - CVE-2017-8676: Windows GDI+ Information Disclosure Vulnerability; Microsoft AutoUpdate - Alerts users to re-install MAU when missing or broken components are detected. OS X 10.10 or later, 64-bit processor. Screenshots Download Now.

When you try to activate or sign in to any of the Microsoft Office 2016 applications after you install the version 15.33 update, you receive a blank authentication screen. Additionally, you may see any of the following symptoms.

Symptom 1

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The following issues occur in the Unified Logging Service (ULS) log:

  • The server has redirected to a non-https URL.
  • Errors occur in Azure Active Directory Authentication Library (ADAL) authentication.

To locate the ULS log, open Finder and browse to the following path:


Note <Application> represents the name of the application that you are troubleshooting.

Symptom 2

You notice that in an HTTP trace, the server response includes multiple WWW-Authenticate headers, such as the following:

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WWW-Authenticate: Negotiate

WWW-Authenticate: NTLM


The symptoms occur for the following corresponding reasons:

Cause for symptom 1

Starting from Office 2016 for Mac version 15.33, unsecured endpoint traffic is blocked in authentication flows.

Cause for symptom 2

Starting from Office 2016 for Mac version 15.33, the authentication method no longer selects NTLM authentication when multiple WWW-Authenticate headers are present in the response. The issue occurs when the selected authentication method is unsuccessful.


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Resolution for symptom 1

Configure all authentication endpoints to use the Secure Sockets Layer (SSL) protocol.

Resolution for symptom 2

Install the September 2017 update for Office 2016 for Mac version 15.38.

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More Information


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More information for symptom 1

The resolution applies when you use Microsoft Active Directory Federation Services or non-Microsoft federation solutions.