Retrying PLAIN authentication after AUTHENTICATE failed for outlook.com and hotmail.com accounts

[adrianbecker013]

Hello,

Hope you are doing well!

I am trying to access my outlook.com/hotmail.com account via IMAP using the following PHP code:

$mailbox = new PhpImap\Mailbox(  
    '{outlook.office365.com:993/imap/ssl}', 
    xxx Email address is removed for privacy xxx',
    'xxxxxxx', 
    __DIR__, 
    'US-ASCII'
);

$folder = $mailbox->getMailboxes('*');
print_r($folder);exit;

However, I am encountering the following error:
IMAP connection error: ["Retrying PLAIN authentication after AUTHENTICATE failed.","Retrying PLAIN authentication after AUTHENTICATE failed.","Can not authenticate to IMAP server: AUTHENTICATE failed."]

I have already enabled IMAP and generated an app-specific password, which I am using in this code. Could you please let me know if I’m missing something or if there's anything else I should check?

Thanks in advance for your help.

[luoluolzb]

I had the same problem with 10-01. outlook Email

[adrianbecker013]

@luoluolzb Has the issue been resolved? If so, could you please share the steps you took to fix it?

[karacult]

To resolve this issue, it is recommended to use Google App Passwords, which can be generated via your Google Account settings here: https://myaccount.google.com/u/0/apppasswords. Use the generated App Password in place of your primary account password. Kindly note that Two-Factor Authentication (2FA) must be enabled on your account before you can set up App Passwords.
As an alternative solution, consider utilizing the official Google API, interacting with it through a suitable client library (e.g., google/apiclient)