OST to PST Conversion in Case of User Mailbox Corruption

When you start Microsoft Exchange Server 2003, Event ID 8230 and 8206 may be logged into Application Event Log of Exchange Server. These events prevent you from accessing calendar data of Exchange Server Mailbox using OST (Offline Storage) file. In such situations, you need to recreate the affected user mailbox that requires conversion of OST file to PST (Personal Storage). It can be easily achieved using OST Repair tool.

When you attempt to start Microsoft Exchange Server 2003, you may find the following events logged into the Application Event Log:
Event Source: EXCDO
Event ID: 8230
Description:
An inconsistency was detected in The calendar is being repaired. If other errors occur with this calendar, please view the calendar using Microsoft Outlook Web Access. If a problem persists, please recreate the calendar or the containing mailbox.
Event Source: EXCDO
Event ID: 8206
Description:
Calendaring agent failed with error code 0x80070057 while saving appointment.
After this error message, Exchange Server can not synchronize with Microsoft Outlook and OST file can not be converted into PST. In this case, the data becomes inaccessible. So, you need to manually Convert OST to PST to resolve the issue and access all information from the OST.

Root of the issue

This situation generally occurs due to mailbox corruption or missing objects of user mailbox. In both the cases, your critical data such as e-mails, notes, contacts, calendar entries, journals and personal folders become inaccessible.

Resolution

To resolve this problem, recreate the user mailbox on Exchange Server. It will remove the old mailbox which is damaged and will create a new working mailbox.
This method can fix the problem, but to access your data stored in the OST file, it is required to Convert OST File to PST. After conversion, you can directly import the resultant PST file into MS Outlook and can use it with Exchange Server.

Conversion can easily be performed using advanced and powerful third party OST Repair Tool. Such tools incorporate advanced algorithms to effectively convert all OST file objects. These applications come equipped with interactive and simple graphical user interface and thus do not require sound and prior technical skills to achieve absolute conversion of your critical OST files.

OST to PST Converter is the foremost OST Repair Tool to convert unusable OST file to PST. It supports conversion of OST files of Outlook 2003, 2002, 2000, 98 and 97. The software is compatible with Windows XP, 2003, 2000, NT4 (SP6), ME and 98SE.