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This tool will automatically diagnose any issues with your Office 365 account and provide you with relevant fixes. You can download this tool by following this link: Microsoft Support and Recovery Assistant. Install and run Microsoft Office 365 Support and Recovery Assistant. Recommended method Run Office 365 Support and Recovery Assistant This document will go over some solutions to this issue.
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This problem will occur for a variety of reasons. Additionally, you may receive the following error message: An encrypted connection to your mail services is not available. HKEY_CURRENT_USER\Software\Policies\Microsoft\Office\16.When you try to set up a new mail account for Outlook by using the Add New Account Wizard, your Outlook profile may not automatically set up. HKEY_CURRENT_USER\Software\Policies\Microsoft\Office\15.0\Lync\ AllowAdalForNonLyncIndependentOfLync Recommend that users enable the following registry keys if you use Modern Authentication for Exchange. Recommend that users enable Modern Authentication after the Skype migration is completed. For more information, see Outlook 2010, 2013, 2016, or Outlook for Microsoft 365 doesn't connect Exchange using MAPI over HTTP as expected. It is recommended that users force Outlook to use Modern Authentication by setting the DWORD value of the following registry key to 1:įor more information, see Outlook prompts for password and doesn't use Modern Authentication to connect to Microsoft 365. Modern Authentication is enabled by default. HKEY_CURRENT_USER\Software\Microsoft\Exchange\AlwaysUseMSOAuthForAutoDiscover It is recommended that users force Outlook to use Modern Authentication by setting the DWORD value of the following registry key to 1. HKCU\SOFTWARE\Microsoft\Office\15.0\Common\Identity\Versionįor more information, see Enable Modern Authentication for Office 2013 on Windows devices. HKCU\SOFTWARE\Microsoft\Office\15.0\Common\Identity\EnableADAL Modern Authentication can be enabled by setting the DWORD value to 1 in the following registry subkeys: Modern Authentication is not enabled by default.
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Serious problems might occur if you modify the registry incorrectly.
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