However I have just started getting this message repeated every few seconds either with Outlook active or just in 'Mail'. Both show up in my Outlook page as usual. So, verify what user account you are using to logon Windows when you try Outlook connection via ROH, and make sure it is the correct domain user account.Īlso, verify the Outlook Exchange proxy server configuration and insure it is set to NTLM. : This feature is being slowly rolled out to Production beginning in 16.14 (18061302). Mac Mail - Authentication Failed I have 2 email accounts one is a Outlook account and the second is a Mail account. Not only you need to change the authentication on RPC virtual directory, but also you need toĪuthentication method you setup in Outlook profile. Prompts you for domain, user name, and password information. Ahammad, thank you again for your quickly response. If your current Windows operating system logon information fails, Outlook This is because that, if you use NTLM authentication, Outlook tries to use your current Microsoft Windows® operating system logon information. Must be the same as your mailbox account. To enable NTLM, you need to logon windows as your domain user account, which NTLM authentication is also known as Integrated Windows authentication. So, verify what user account you are using to logon Windows when you try Outlook connection via ROH, and make sure it is the correct domain user account. How does the connection states fail? Did you being prompted for credential? Or you receive any other error message when you try to connect? Not only you need to change the authentication on RPC virtual directory, but also you need to change the authentication method you setup in Outlook profile.
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