Microsoft Outlook For Mac Password Failure

Learning has never been so easy!

Microsoft Tech Community. Outlook for Mac adds new authentication flow for Google IMAP in Insider Fast. Outlook for Mac now supports OAuth for authentication for Google Accounts configured via IMAP. This feature will start rolling out slowly to our Insider Fast users. Sep 16, 2019 If the status is Login Failed, check with your email provider to be sure that your account is set up correctly on your Mac. If Mail asks for your password, but entering the password doesn't help, find out why your email provider is rejecting your password. This tool resets customization that you've made to Outlook from the Outlook menu Preferences. It also restores Outlook window size and position settings. Set Default Mail App. This tool lets you choose Outlook for Mac as your default mail application. Then Outlook opens a new email whenever you click on a mailto: link in an email or website.

Outlook for macintosh

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.

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)

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

Outlook On Mac

Click Outlook -> Preferences in the menu bar

Step 5: Open Accounts

Open the Accounts Section..

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.

Important note for Office 365 subscriptions: After September 22, 2016, Office 2011 for Mac is no longer available for installation with an Office 365 subscription.This doesn't affect one-time purchases of Office for Mac 2011 such as, Office Home and Student, Office Home and Business, or Office Professional. Microsoft office for mac Mar 19, 2020  Tech support scams are an industry-wide issue where scammers trick you into paying for unnecessary technical support services. You can help protect yourself from scammers by verifying that the contact is a Microsoft Agent or Microsoft Employee and that the phone number is an official Microsoft global customer service number.

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!

Microsoft Outlook For Mac Password Failure Windows 10


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Microsoft Outlook For Mac Password Failure Windows 7


  • 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