If you suspect your Office 2016 product key isn’t authentic, Microsoft offers a way to check it. Check Office 2016 Product Key. Visit this page, and sign in with your Microsoft account. This can be any Microsoft account. It doesn’t matter if you have it tied to an Office 365 subscription or to a Windows 10 account. Neither is needed. Retrieve Microsoft Office 2016 key; Fixed bugs of decoding Microsoft Office 2013 key; Have you lost your product key and need to reinstall Windows or Microsoft Office? Our Lazesoft Windows Key Finder. To change the Office 2016 product key on only one computer: Open an Office 2016 application, such as Word. Go to File Account. Choose Change Product Key and enter the product key. If you need to change the Office 2016 product key on multiple computers after Office. How to activate Microsoft Office 2016 using command Prompt. We will use the KMS client key to activate your Office manually. Find Activation Command on.

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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

Office 2016 Mac Product Key Auslesen

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

Office 2016 Lizenz Key Auslesen Mac

These steps affect all Office applications that use modern authentication.

Microsoft Office 2016 Mac Key Auslesen

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.