OST Recovery after Removing User Account and Changing Mailbox Domain

Published: 15th December 2009
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When you try to login to your mailbox on Exchange Server, you need to authenticate against a specific domain of Exchange Active Directory. You cannot access your .ost file unless you provide the required identify information, which proves that you are a valid user of the particular domain. For any reason, if you change the mailbox domain and also delete the user account information, the corresponding .ost file will become orphaned and of no use for Outlook. You cannot directly open the Offline folders with Outlook. To access the data, you must perform OST to PST Recovery using third-party tools, in case if no valid backup is available.



For example, consider a scenario of a mailbox, for which the domain has been changed from 'A' to 'B'. The mailbox owner then creates a new account in this domain 'B'. When this user tries to access Exchange using the previous OST file, the sync operation fails. Additionally, the user cannot access the email messages of this .ost file.



Cause



Since the user mailbox has been moved, the user cannot authenticate to the domain 'B' . This is because of different login information. So, Exchange thinks that the user is not allowed to access the .ost file.



Solution



To overcome the existing issue, you should consider these suggestions:



1-Try to login to domain 'A' with related information and open the .ost file. Backup all its contents and import them to a new .pst file

2-If user account information is not available, you should restore these emails from backup

3-If the problem persists because the backup is too unavailable or exists in corrupt or incomplete state, you should use an efficient OST Recovery utility.



OST to PST Recovery utilities are powerful tools built with advanced technology that could convert an orphaned .ost file to Outlook usable .pst file. Such tools are competent to extract all emails, notes, journals, tasks, appointments and contacts. Moreover, they provide you interactive user interface and hence, you can apply them without any technical hassle. These software provide non-destructive recovery without harming any contents of original file.



Stellar Phoenix Mailbox Exchange Desktop is a reliable and comprehensive utility to perform safe and complete OST Recovery using high-end algorithms. It is an advanced tool that converts unusable Exchange OST file to a Outlook usable PST file without affecting the actual contents of the file. The tool supports Microsoft Outlook 2003, 2002, 2000, 98 and 97.

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