![]() Note: Please follow the steps in our documentation to enable e-mail notifications if you want to receive the related email notification for this thread.As usual, the Mozilla team assigned two overarching CVE numbers to bugs that they found-and-fixed using proactive techniques such as fuzzing, where buggy code is automatically probed for flaws, documented, and patched without waiting for someone to figure out just how exploitable those bugs might be: If you have extra questions about this answer, please click "Comment". If the answer is helpful, please click "Accept Answer" and kindly upvote it. What's the detailed version of Outlook? To view the build number, you can go to File > Office Account > About Outlook.Does the issue affect other Office applications like Excel or Word?.If Outlook is using Modern Auth, “Authn” column shows “Bearer*”: Kindly check the “Authn” column of Outlook Connection Status (Hold down CTRL and right-click the Outlook icon in your system tray, choose " Outlook Connection Status"). ![]() How does the credential prompt look like? Is it a basic auth prompt or it's a modern auth prompt which looks more like the image below?.In case the issue persists, could you collect the information below so that we can try assist further? More details about the Modern Authentication configuration requirements on different versions of Outlook, see Modern Authentication configuration requirements for transition from Office 365 dedicated/ITAR to vNext. HKEY_CURRENT_USER\Software\Microsoft\Exchange\AlwaysUseMSOAuthForAutoDiscover You can follow the recommended way to force Outlook to use Modern Authentication by setting the DWORD value of the following registry key to 1 and see if it can help: If you are using Outlook 2016 or later, Modern authentication is usually already enabled by default. Reference: Enable Modern authentication for Office 2013 on Windows devices. Before you modify it, back up the registry for restoration in case problems occur.) Serious problems might occur if you modify the registry incorrectly. ( Important: Follow the steps in this section carefully. Just wondering which version of Outlook your users are using? If they are using Outlook 2013, aside from the "EnableADAL" registry key as mentioned in the video, you may also need to configure the other two registry keys listed in the table below: I think it can solve our issue, the fix accoring to the video is to switch the client from basic to modern authentication.Īgreed that in some cases the Outlook password prompt issues could be resolved by enabling modern authentication for Outlook clients using registry keys. ![]() The root cause was a shared mailbox that had the feature outlook client MAPI disabled, issue was solved after enabling the feature. Outlook (Full Azure - M365), some users are experiencing an issue when opening outlook, it prompt them for authentication (Password or fingerprint), when they entrer password, it's working, but right after that it prompt them with another popup to authenticate. ![]() They can only accept answers by others", I'll repost your solution in case you'd like to " Accept" the answer : ) Great to know that the issue has already been resolved and thanks for sharing the solution so that others experiencing the same thing can easily reference this! Since the Microsoft Q
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