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I work in a hybrid 365 environment. Someone made some changes to the archives for users' mailboxes and now I'm getting errors in 365 admin center when I look at an active user:image of error box

I was able to get the details on the errors in AAD Connect powershell with the following: (Get-MsolUser -UserPrincipalName user@domain.com).errors[0].ErrorDetail.objecterrors.errorrecord.ErrorDescription

It returned this for most users: Failed to enable the new cloud archive of mailbox because a different archiveexists. To enable the new archive, first disable the archive on-premises. After the next Dirsync sync cycle, enable the archive on-premises again.

One big issue, is that when I do this, it seems to completely remove the archive from the user, and create a completely new one, which is not what I want. Is there a way to keep the archive in place without making a new one? Even if I set the GUID of the existing archive, it just makes a new empty one. I can backup the archive to a .pst beforehand, but there's gotta be a better way, right?

After I performed the recommended fix on a couple users that didn't matter, I their archive mailbox, albeit empty, look correct in all places. However, when I select a user in 365 admin center, I still get the gray error boxes pictured above. Now when I enter the commands to view the error details, they're blank: image of output

If anyone has dealt with this before and can offer some guidance, it would be greatly appreciated. I'm a bit stumped here and I've almost exhausted all my resources. Please let me know if there's any other info I can provide that would help. Thank you in advance!

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  • This is what I tell everyone when they have an Office 365 issue that they can't figure out: Open a support case with Office 365. It's free. You'll learn some new Office 365 chops and you'll get your issue resolved.
    – joeqwerty
    Feb 26, 2021 at 15:08
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    I opened a support case with MS yesterday and we're starting to get somewhere with this. You're absolutely correct, I am learning more about my 365 setup in the process!
    – rkr87
    Feb 26, 2021 at 16:28

1 Answer 1

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Check the GUID of same mailbox from on-premise Exchange and O365:

Get-Mailbox "user identity with error status" | ft Name, ArchiveGuid
Get-RemoteMailbox -Identity "user identity with error status" | fl DisplayName, ArchiveGuid

Then update the remote mailbox properties with the ArchiveGuid value obtained from Azure AD:

Set-RemoteMailbox -Identity  “user identity with error status” -ArchiveGuid *

Then start a directory synchronization and see if the issue resolves.

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