Reasons of OST File Corruption: To Recover Convert OST to PST

We all use MS Outlook to carry out both internal and external corporate communications. All the Outlook data is stored in a proprietary file called PST (Personal Storage Table) file. However, at times Outlook is used in cached mode, also known as offline mode, at places where the network is either not very reliable or limited. You can work in the offline mode as you would work normally while the changes are reflected when the connection is made with the Exchange Server. All the data in the offline mode is saved in an OST (Offline Storage Table) file, which can get corrupt because of various reasons that are discussed later in the article. To recover OST file, the in-built tools can be used to do the needful. However, if you are unable to do so then you should use a third-party OST to PST converter that converts OST to PST file after repairing the OST file.

There are few cases when the Outlook OST gets corrupt or becomes orphan. In such cases, OST file needs to be recovered as the unsaved data can be lost. These cases are:

The OST file is corrupt or damaged. There are some unsent emails that you want to recover. 

There is some data that exists only in the local OST (offline storage table) file as it has not been synchronized with the Exchange Server. 

The Exchange Server is unavailable for some reasons. Because of this, the OST file is unable to get synchronized. Some of these reasons are: 

The user mailbox is shifted or deleted from its original location. 

The Exchange Server system is shut down for sometime. 

The name of the Exchange server or the user mailbox is changed.

Resolution:

To overcome such situations, you should use the in-built OST Integrity Checker Tool (Scanost.exe) to repair and rebuild the OST file. This tool checks and repairs each component in the OST file with its copy in the Exchange Server

If the issue is not resolved even after using the OST Integrity Checker Tool, then you should use a third-party OST recovery tool to recover the OST file. These read-only tools, then, convert OST to PST file without making any changes in the original OST file.

The best OST recovery tool that repairs corrupt OST files from all instances of logical corruption and converts it to PST file is Stellar Phoenix Mailbox Exchange Desktop. Recovering OST created for MS Outlook 2010, 2007, 2003, 2002, and 2000, this OST to PST converter restores emails, attachments, tasks, journals, contacts, calendar entries, etc. With the ability to preserve the formatting of the HTML and RTF messages, this convert OST to PST utility is compatible with Windows 7, Vista, Server 2003, XP, and 2000.

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How to fix Exchange is Currently in Recovery mode Error

Microsoft Exchange when combines with MS Outlook application delivers an excellent and in demand e communication environment. Such kind of environment is well cooperates with both office and home users. MS Exchange server automatically creates an OST file which is a replica of Exchange mailbox containing all the data entered by user while working offline. But often OST file users come across error issues while accessing their OST file data through Outlook.

Consider a scenario when you attempt to establish connection between MS Outlook client and Exchange server 2003 the following error message get displayed on your system screen:

"Exchange is currently in recovery mode. You can connect to your Exchange server through the network, work offline, or cancel this logon"

Thus with the emergence of the error message you become unsuccessful to establish connection between Outlook and Exchange server and hence cannot access your OST file emails.

Two primary reasons responsible for this error issue are:

1.Enabled Cached Exchange Mode or
2.Migration of Client mailbox to another Exchange Server version

However your OST file data remains inaccessible to you unless you fix ost file error issue from your system. The error problem can be fixed in two possible ways:

By disabling Cached Exchange Mode – If the Cached Exchange Mode is running or in enabled state then disable it by performing the following steps:

1.  Go to Tool menu>Email Account>View change the existing email account and click on Next button
2.  In Outlook process email for these accounts and select the Change option
3.  In Microsoft Exchange Server uncheck the Cached Exchange Mode option checkbox to disable it and restart Outlook

By creating new Outlook profile - In order to create new profiles in Outlook follow the steps given below:

1.  Go to Control Panel>User Account>Mail then select show profile and click on the Add option and type the desired profile name
2.  Click on OK and follow the on screen instruction to complete the process

The above mentioned steps will resolve the error problem but does not allow you to access your previously stored mailbox data from Outlook. For that you need to convert OST to PST file using genuine third party OST to PST converter tool. The tool scans the OST file and repair and convert it into PST hence making it accessible to you.