Why is my Entourage email not receiving any mails?

Following up with a few thoughts.

Entourage was discontinued in 2013, it's frankly amazing that you have been able to continue using it all this time. Two years ago, MS also discontinued TLS support, which Entourage used, making it even more amazing that you have been able to use it until here in 2024.

You should really switch to using a current release of Outlook, the Apple Mail app or other current email app.

Or you could just wait until tomorrow and see if the interruption is just something temporary.

But you should also check with your email service provider(s) about their email server settings & whether or not they use app-specific passwords (you're probably headed that way no matter what).

If you are using hotmail.com or outlook.com email service and "must" continue using Entourage you may have to do 2 things :

1 - You may have to change your email account incoming server setting to the legacy servers that MS provides legacy users depending on whether you are using POP or IMAP mail. See this MS article for detailed information (you really only need to read the first paragraph under "Configuring the new endpoint:"

• • pop-legacy.office365.com -or-
  • imap-legacy.office365.com

2 - You may also need to get an app-specific password. Again, if you are using hotmail.com or outlook.com, log into your Microsoft Account via the web, then navigate to Security > Manage how I sign in > App passwords > Create a new app password. After you create an app password, enter it in the password field in your hotmail or outlook email account in Entourage.

Using app passwords with apps that don't support two-step verification (microsoft.com)

What about application passwords? Will that keep working?

If application passwords are being used for MFA (Multi Factor Authentication) along with basic auth as another auth mechanism, then when basic authentication is disabled, app passwords used for MFA will stop working too.

Where can I find more information?

There are several resources that we wanted to provide here as additional reading:

• Basic Authentication Deprecation in Exchange Online – September 2022 Update – this is a comprehensive post containing more information about this effort.
• Deprecation of Basic authentication in Exchange Online – our official documentation related to this effort, with links to much more information and guidance.

https://techcommunity.microsoft.com/t5/exchange-team-blog/exchange-online-email-applications-stopped-signing-in-or-keep/ba-p/3641943

Exchange Online email applications stopped signing in, or keep asking for passwords? Start here. - Microsoft Community Hub