LocalDate endDate = LocalDate. LocalDate startDate = LocalDate.of(2022,4,1) Login to, go to the Security Tab, click on App Passwords, and set up an app password for your Mac Mail. This gives me users who are still signing in with legacy auth and need to be updated to use modern auth. I review the azure AD sign ins and filter by client apps that use legacy authentication. On the Permissions tab, press the Add button to add the person you want to grant mailbox access to. I am going to implement security defaults for our 365 tenant - enable MFA and block legacy authentication clients. ImapMailBoxReader imapReader = new ImapMailBoxReader( Opening the Folder Permissions dialog for the Mailbox folder. The code I use is the following (using javax.mail version 1.6.2): package my. The error I get is: : AUTHENTICATE failed.Īt .IMAPStore.protocolConnect(IMAPStore.java:732)Īt (Service.java:366)Īt (Service.java:246)Īt my.processOnMessages(ImapMailBoxReader.java:69)ĭigging deeper, the cause seems to be an A3 NO AUTHENTICATE failed. ago Ran into this post when Googling for the same problem, but with Amazon Workmail.

Has something changed on the office365 side I should know of? You can download Microsoft office license removal: Run this and it will fix the Outlook issue. When I run it now, I suddenly get an 'AUTHENTICATE FAILED.' I get the error on two different PCs, and I have validated that the credentials used still work when I log into may office365 mailbox using the browser.

Select Mailing account> Click More Options> Outgoing Server If the Authentication Status is set. I have a piece of Java code (see below), which has not been changed in a while and worked two weeks ago. Open Mac Outlook, Click on Tools> Accounts.

Outlook authentication failed mac