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Outlook is not syncing and giving a "Need password" message

I have several users that over the last 1-2 months increasingly have experienced that their Outlook wont sync. All of them then experience as message in the bottom of the Outlook screen that says "Need password", but if you click it, you just get a quick blink of a white screen, and then it disappears.

While the issue is present for the users, it is not possible for them to create a new Outlook profile, as it wouldn't connect to the mailbox. I had luck with just rebooting my own computer, that fixed the issue for me, but only until the next day. Other users had bigger problems getting it to work.

The issue apparently seems to be an implementation on "Web Account Manager" (WAM) in Office/Windows. The solution is to set below registry key to 1 in below path.

Path: HKEY_CURRENT_USER\Software\Microsoft\Office\16.0\Common\Identity
Key: DisableADALatopWAMOverride (DWORD)

There is a bit more information on the error on below links. As said, the issue is resolved with above registry fix, but it obviously isn't optimal, and preferably it would be fixed by a software patch, either for Windows or Office.

https://support.microsoft.com/en-us/help/4025962/you-can-t-sign-in-after-you-update-to-office-2016-build-16-0-7967-or-a
https://www.reddit.com/r/Office365/comments/7kklt2/autodiscover_issue_on_outlook_2016_o365_exchange/
https://community.spiceworks.com/topic/2025536-outlook-2016-365-keeps-asking-for-credentials?page=3

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Rasmus Dybro shared this idea  ·   ·  Flag idea as inappropriate…  ·  Admin →

78 comments

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  • Vlk, Petr (KPCS CZ) commented  ·   ·  Flag as inappropriate

    Yes, really annoying and someone should fix it really fast. I recommend making a pause for new graphical interfaces and focus some moths to reliability.

  • Anonymous commented  ·   ·  Flag as inappropriate

    This worked! The post should be pinned as I could see many such incident reported on the internet forums.

  • Jonathan Thompson commented  ·   ·  Flag as inappropriate

    Thank you so much! I lost 4 hours this morning. I was locked out of my inbox. I tried several things from different forums but this is what finally fixed my issue. Thank you, thank you, thank you!

  • Jay commented  ·   ·  Flag as inappropriate

    After I spent hours searching, this edit seems to have done the trick. It also cleared the "recent files" lists from my Office applications. Keeping an eye peeled for other unintended consequences.

  • Mike Dienes commented  ·   ·  Flag as inappropriate

    What we found was on Windows 10 in the Settings>Account>Email and App Accounts area there is your email address. If you disconnect it and also in the Access work or school and clear your user credential vault the issue will go away.

    If you have trouble disconnecting the account, reboot and do it immediately after signing in and you'll see the login box.

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