Microsoft Outlook 365 Mac Will Not Accept Password

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My Mac updated and now I cant sign in to Office 365 I updated my Mac and can not open a word, excel etc function. I put in my email where it asks to log into an existing subscription, then my password and the password is rejected. Sep 25, 2019  Outlook for Office 365, Outlook 2019 and Outlook 2016. When using Outlook for Office 365, Outlook 2019 or Outlook 2016 (except for the Volume License msi-version), Outlook will prompt you for your credentials and the additional verification step as these versions offer native support for OAuth 2.0 for Gmail accounts. Jan 09, 2016 New setup of Outlook 2016 won't accept a correct password. I'm setting up Outlook on my new laptop. In the first setup screen, I try to connect to my existing sbcglobal account using both the automatic (enter email address and password) and manual (entering pop3 settings). In either case, it does not accept a password I know is correct. Steps to Fix Outlook 2011 For Mac Keeps Asking Password of Office 365 Account. If the Keychain Access program is corrupted, then whenever the Outlook user is trying to connect with O365 on Mac platform, the password problem arises. As a result, Outlook 2016 for Mac keeps asking for password of Office 365 account. To troubleshoot this problem. Jun 02, 2016 I recently had a major issue where a client was seeing constant password prompts when multi-factor authentication (MFA) was enabled for access to Office 365 through AD FS. This particular client was using Symantec VIP for MFA but I have had reports that other MFA solutions also cause the same issue.

Learning has never been so easy!

So, I was having this BRUTALLY annoying issue on my macs (when I work from home, I work on my mac) where, every time I launched Outlook 2016, I would be prompted to login with my credentials.. Just super annoying and unnecessary.

Theres a ton of documentation on 'how to fix this' but a lot of it misses an important step (also, a facepalm step).

6 Steps total

Step 1: Open the Keychain

Theres a bunch of ways to do it, but ultimately, the easiest way is to press CMD+Space, to open spotlight, then search 'Keychain Access'.

Step 2: Clear old items relating to Exchange/MS login in the keychain

According to a Microsoft Representative, the best option here is:

Make sure you quit Outlook and other Office apps.

Microsoft Outlook Not Accepting Password

Search 'Exchange' under Login --> All Items and delete everything (NOT EVERYTHING - take a look and make sure you're only deleting entries that are in some way related to Microsoft)

365

Search 'Office' and delete everything
Search 'ADAL' and delete everything

Step 3: Open Outlook & Login

Yea, I know, we're trying to fix this - but you have to log in this ONE more time..

Step 4: Open Outlook Preferences from the menu

Click Outlook -> Preferences in the menu bar

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Step 5: Open Accounts

Open the Accounts Section..

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Step 6: Finally.. Add your password

Seriously - this is critical! Add your password in the password field for the account in question, then close the preferences window.

NOW - when you restart Outlook you SHOULD NOT have to login!

While this isn't the most difficult or pressing issue in the world, it most definitely is annoying! I hope this guide helps some folks!

References

  • michaelkummer.com
  • Microsoft TechNet Discussion

5 Comments

  • Chipotle
    Tony Bongiorno Jul 19, 2017 at 06:07pm

    Thanks for posting. I've seen this quite a few times from multiple users

  • Sonora
    TMagro Apr 8, 2019 at 07:45pm

    Tried and still not working for me. Box will not go away. :(

  • Pimiento
    spicehead-pn1ix Jul 16, 2019 at 04:02pm

    Thanks for posting, but the login box still appears. A question -- when I searched Exchange, should I delete the Private Exchange Key (two of them) and Public Exchange Key (also two files)?

  • Pimiento
    spicehead-xgxh2 Aug 6, 2019 at 06:33am

    still not working for me. I have 3 office 365 accounts, and every time I should enter the password 3 times for each account. It is really annoying

  • Sonora
    earthsound Mar 31, 2020 at 06:22pm

    A couple of steps we added to our recipe to workaround this longstanding issue:

    - Open Keychain Access > View > Show Invisible Items
    - After deleting entries in Keychain related to office, exchange, and adal > restart computer.
    - In Keychain > lock the login entry.
    - Open Outlook > input password to allow access to Keychain again
    - Continue with steps to input password into the password textbox under Tools > Accounts > mailbox(es) having issues
    - Restart Outlook

-->

Outlook 365 Won't Take Password

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.

Note

Office 365 Outlook Not Accepting Password

These steps affect all Office applications that use modern authentication.

Microsoft Outlook 365 Mac Will Not Accept Password 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.