Archive mailbox is offline in O365

Surya kumar 340 Reputation points
2023-05-25T17:33:43.3466667+00:00

Hi,

I tried to run start-managedfolderassistant powershell command for a particular user, however I am getting a warning like below

Warning: The user "<email address"> archive mailbox is offline.

Please let me know how to resolve this warning. I didn't know if this is the reason or not but we weren't able to see auto archive of emails from primary mailbox to archive mailbox. We have assigned the retention policy as 2years archive

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  1. Yuki Sun-MSFT 41,016 Reputation points
    2023-05-26T02:09:54.91+00:00

    Hi @Surya kumar ,

    I didn't know if this is the reason or not but we weren't able to see auto archive of emails from primary mailbox to archive mailbox.

    Yes, this could be the reason.

    Please try to run the same command with Exchange GUID instead and see if there would be any difference:

    Get-Mailbox <UserName> | FL ExchangeGUID
    
    Start-ManagedFolderAssistant <ExchangeGUID>
    

    In case the issue persist, could you clarify the things below?

    • Have you tried running the start-managedfolderassistant cmdlet against other users and see if the issue can be reproduced?
    • Are you in an Exchange hybrid environment or it's a pure Exchange Online organization?

    If the answer is helpful, please click "Accept Answer" and kindly upvote it. If you have extra questions about this answer, please click "Comment".

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    1 person found this answer helpful.

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  1. Amit Singh 4,876 Reputation points
    2023-05-26T08:27:57.0833333+00:00

    In-place archiving must be enabled for the retention policy to work properly.

    https://docs.microsoft.com/en-us/office365/securitycompliance/set-up-an-archive-and-deletion-policy-... 

    "The first step is to enable the archive mailbox for each user in your organization. A user's archive mailbox has to be enabled so that a retention tag with a "Move to Archive" retention action can move the item after the retention age expires."

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