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If Office installation fails, see What to try if you can't install or activate Office 2016 for Mac. Launch an Office for Mac app and start the activation process Click the Launchpad icon in the Dock to display all of your apps.

1. Applies to: Office 2019 for Mac. The Volume Serializer (VL) is used to activate Office 2019 for Mac as a volume licensed version. It's an approximately 4 mb package file that you run on a user's computer, either before or after you've installed Office. Download the Volume License (VL) Serializer from the VLSC.
2. 5.At this point, you can see if your version of Office is active on the right side. The following is troubleshoot ways: If the office 2016 is activated, we try to reinstalled it, and reactivate it. If the office 2016 is not activated, we can reactivate it according to the way in following link.
3. Hi I recently bought a Microsoft office 2016 for Mac. I tried to install it but it is not working. When I try to activate it through word it tells me no licence found. Technician's Assistant: When did you last change your password. Apple ID? Technician's Assistant: Did you try resetting through Apple's online account reset.
4. To resolve this issue without running the script, follow these steps: Exit all open Office applications, including Outlook and OneNote. On the menu bar, click Go Utilities, and then double-click Terminal. Type the following text, and then press Enter in the Terminal Window: killall.

Note

Office 365 ProPlus is being renamed to Microsoft 365 Apps for enterprise. For more information about this change, read this blog post.

Symptoms

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

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:

~/Library/Containers/com.microsoft.<Application>/Data/Library/Caches/Microsoft/uls/com.microsoft.<Application>/logs

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:

WWW-Authenticate: Negotiate

WWW-Authenticate: NTLM

Cause

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.

Resolution

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.

More Information

More information for symptom 1

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

Office 2016 Key Not Activating

Office 2016 For Mac Not Activating Key