![]() ![]() HKEY_CURRENT_USER\Software\Policies\Microsoft\Office\x.0\Outlook\Autodiscover HKEY_CURRENT_USER\Software\Microsoft\Office\x.0\Outlook\Autodiscover Use ExcludeLastKnownGoodUrl to prevent Outlook from using the last known good AutoDiscover URL ![]() ![]() Once the registry entries are in place, restart Outlook and try to add the account or create a new profile again. To work around this issue if the web service provider or web hosting provider is unable to resolve it, take the following action:Ĭreate Outlook registry keys to exclude the Last Known Good settings, HTTPS root domain, and the SRV record as detailed below. For example, Outlook may receive a result such as Typically, the root domain lookup would fail in this case, and Outlook would perform an Autodiscover lookup against However, because Outlook receives a successful Autodiscover response from the root domain lookup, Outlook tries to authenticate against the advertised protocols such as POP and IMAP, and the operation fails.Ĭontact your web service provider or the web hosting provider of your domain website and make sure that the web server is not responding to Autodiscover requests. This issue occurs because the Autodiscover process that's used by Outlook receives an unexpected result from a third-party web server when it performs the root domain lookup. When adding an Outlook account for Microsoft 365 with a custom domain or an account with a personalized email address, you receive the following error: ![]()
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