535 5.7.139 Authentication unsuccessful

Question

‘535 5.7.139 Authentication unsuccessful, user is locked by your organization's security defaults policy. Contact your administrator“
What do I need to do?

Answer 1

Hi @成 梁

For us to better understand the situation, can you share some more information like:

1.What application are you using to access your mailbox?

2.Can you use Outlook for windows or OWA to access the mailbox?

If you are using some third-party email applications and you are not the administrator in your organization, please contact your administrator for further help.

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