Member Avatar for AlbanWhitehead

MS Outlook 2007. The user account domain was accidentally deleted, then created again. I received new SID. on a local computer the new local profile was created. on exchange the new box with the same name (to it access is) was created. in exchange there are 2 boxes now.
How to get access to the old box? access is only to a new (empty) box, all necessary mail in the old. the rights at this user the full. Outlook writes that file .ost is not available because it created to a different account.

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Short summary for and follow-up to : the problem you described (deleted/recreated AD account, new SID, two Exchange mailboxes, OST error) is exactly the situation Exchange treats as a disconnected/disabled mailbox on the server while a new mailbox object was created for the recreated user. The correct recovery is to deal with the mailbox on the Exchange side first (reconnect or restore the old mailbox), then fix the Outlook profile; trying to reuse the old .ost will not work because OSTs are cache files tied to the original mailbox/profile. (learn.microsoft.com)

Practical Exchange-admin steps (on‑prem Exchange):

  • Locate the disconnected mailbox(s) and note the MailboxGuid/DisplayName/Database. Example PowerShell to list disconnected mailboxes:

    $dbs = Get-MailboxDatabase
$dbs | ForEach-Object { Get-MailboxStatistics -Database $_.DistinguishedName } |
  Where-Object { $_.DisconnectReason -ne $null } |
  Format-Table DisplayName,Database,MailboxGuid,DisconnectDate

  • Reconnect the old mailbox to the AD user (EAC has “Connect a mailbox” or use Connect‑Mailbox). Example:

    Connect-Mailbox -Identity "<MailboxGuid or DisplayName>" -Database "Mailbox Database" -User "DOMAIN\NewUser"

These actions are the supported way to restore the old mailbox into the recreated account. (learn.microsoft.com)

If you must keep the new empty mailbox object (avoid deleting it), copy the old mailbox contents into the new mailbox instead of reconnecting: create a mailbox-restore request (New‑MailboxRestoreRequest) to copy items from the disconnected mailbox to the current mailbox. That preserves the existing mailbox identity while recovering mail. If the disconnected mailbox was purged (retention expired) you’ll need a backup/restore solution. (learn.microsoft.com)

Client-side notes: don’t try to reuse the old OST — Outlook will refuse because OSTs are a cached copy tied to the original mailbox/profile. After the server-side reconnect/restore, recreate the Outlook profile (Control Panel → Mail → Profiles) or remove and re-add the Exchange account so Outlook builds a new OST. If the OST holds unique data not on the server, recovering it requires third‑party OST→PST tooling or a server restore; treat those as last resorts. (support.microsoft.com)

Cautions: perform mailbox attach/restore as an Exchange admin, confirm which mailbox GUID you’re targeting, and check the deleted-mailbox retention window before making destructive changes.

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Member Avatar for EthanGreene83

You must deleted this mailbox in this new user. in the vault on an old box appears red cross. make it reconnect. select for what user and all. (here there are only remote users or remote users mailboxes). in the client, delete the exchange account. and then create again a box and all is fine connects. Made autonomous folders.
See if the following article would help:
https://answers.yahoo.com/question/index?qid=20140704025027AA0onZj

Member Avatar for AlbanWhitehead

Thank you for the help!

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