Deleting an account in on premise not deleting it in cloud.

SJ109 66 Reputation points
2022-04-20T09:45:40.067+00:00

An AD account was disabled from AD. But it did not delete the mailbox in cloud as usual. The mailbox in cloud is still there . And we are seeing this error on the account in cloud: Exchange: Failed to sync the ArchiveGuid 00000000-0000-0000-0000-000000000000 of mailbox 5**************uu because one cloud archive 0**1***36666666****** already exists..;

Microsoft Exchange Hybrid Management
Microsoft Exchange Hybrid Management
Microsoft Exchange: Microsoft messaging and collaboration software.Hybrid Management: Organizing, handling, directing or controlling hybrid deployments.
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  1. Vasil Michev 94,911 Reputation points MVP
    2022-04-20T09:50:38.777+00:00

    Disabling an AD account does not result in deleting the corresponding Azure AD user or any associated mailbox. If that is your goal, you need to delete the on-premises account or move it out of scope of dirsync. Make sure to sort out any dirsync errors in the process.
    Also, depending on whether a hold is active on the mailbox, the deletion might result in provisioning an Inactive mailbox instead.

  2. KyleXu-MSFT 26,206 Reputation points
    2022-04-21T07:17:23.787+00:00

    @SJ109

    I want to confirm with you how this mailbox was created and how do you disable it. I will try to reproduce this one in my lab.

    Here is a related article which may be useful to you: Validation errors for a mailbox archive GUID for Microsoft 365 users

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