Error 535 5.7.139 Authentication unsuccessful, basic authentication is disabled

nikos chatzinicolaou 0 Reputation points
2024-10-16T10:25:34.1666667+00:00

Dears,

I get the same error "535 5.7.139 Authentication unsuccessful, basic authentication is disabled"

I try to send mail with smtp-mail.outlook.com and port 587 with TLS option

I have a personal email on @hotmail.com and I have created app password.

Please assist

Nikos

Outlook Management
Outlook Management
Outlook: A family of Microsoft email and calendar products.Management: The act or process of organizing, handling, directing or controlling something.
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  1. ChristyZhang-MSFT 23,901 Reputation points Microsoft Vendor
    2024-10-17T02:14:04.6533333+00:00

    Hi @nikos chatzinicolaou ,

    Welcome to our forum!

    According to your description, i understand that you are using a Hotmail.com account and the basic authentication is disabled. I'm afraid that you need to use Modern Authentication to connect your Hotmail.com account. As i know:

    Outlook supports Modern Authentication in all current Microsoft 365 subscription SKUs and Outlook 2021 LTSC (any SKU with build 11601.10000 or higher) when connecting directly as Outlook.com. If your Outlook is configured to connect to Outlook.com using POP or IMAP, Modern Authentication is not supported.

    Please try to create a new Outlook Desktop profile(Control Panel>Mail>Show Profiles>add) and then add your Outlook.com account using automatic account configuration.

    More information: Modern Authentication Methods now needed to continue syncing Outlook Email in non-Microsoft email apps.

    Hope to help you!


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