How to Perform OST to PST Conversion Manually?

In this date and age, we cannot live and survive without emails. By considering this need, Microsoft Outlook has come to the rescue for desktop users. For emailing purpose, Microsoft Outlook is the first and leading name to reckon with. Outlook is a very familiar tool these days. It is often called as an email client. But in real world, it is more than an email client. Instead, it is your personal information manager which consists of various amazing features along with emailing, such as task manager, calendar, note taking, contact manager, web browsing and journal.


Outlook is an application from a hottest favorite Office suite, Microsoft Office. It also comes as an individual application. It is widely used for email purpose. But in large scale organizations, Outlook is also used for multiple users as part of Exchange Server, so users can share mailbox data easily with each other.


Microsoft Outlook also provides offline mode to work on, especially if you don’t have internet connectivity or connection with Exchange Server. For this purpose, MS Outlook creates a backup data known as Offline Storage Table or OST, on a local system. If you don’t have connectivity to Exchange Server, the mailbox items are stored in Personal Storage Table or PST, an Outlook data file.

OST Converter Manually

Why to Convert OST to PST?

It often becomes important to perform OST to PST Conversion. Here’s why you have to do it –

Mailbox items go inaccessible because of Exchange Server crash. You may work in offline mode with OST data, but it cannot be synchronized with Exchange Server. So, you have to immediately access mailbox to make changes. For doing this, it becomes important to migrate from OST file to PST.
If you are shifting from one organization to another, you have to convert OST into PST format. For instance, your Outlook account is linked with Exchange Server in your organization. You have to resign from the company to join a new one about a few months later. Since you are leaving, the Exchange Server administrator would remove your account. Your OST files will be inaccessible without having Server connection. In that case, you have to convert OST files into PST.
The major issue with Exchange Server is that it needs regular maintenance. You cannot use Exchange Server when its maintenance is running. It is often important to access mailbox items. To do it, you need OST to PST conversion to import the files into MS Outlook.
If you have deleted some of the important data from mailbox items, OST to PST file conversion is the only way to get recovery.
File corruption is another major reason for OST to PST file conversion. Due to non availability of reliable OST repair software in the market which can easily resolve corrupt OST files, OST to PST migration is the only option. You can easily do it with a professional third party tool. Microsoft also provides Integrity Check option, Scanost.exe, which scans corrupt OST data but it is not at all effective in serious corruption issues.

These are few of the major reasons to convert Outlook OST into Exchange Server accessible PST files. But the main question arises is how you can do that. There are some of the Outlook experts who have suggested some manual tricks to export OST mailbox data into PST file format. You always need to try few of the manual tricks as they don’t need third party tool. Before exporting OST mailbox items into PST file format manually, consider the following things –

Create new Outlook data in PST where you can move or export your mailbox items.
Local system where Outlook OST files were created originally
Outlook is configured with Exchange Server and you have valid internet connection to export mailbox.

Outlook has Import & Export feature which is the ideal way to export mailbox items. Here’s how you can use this feature –

Open Microsoft Outlook
On File menu, go to Open > Import.
Launch the Import & Export Wizard. Here, you can choose “Export to a File”. Then click on “Next” button.
Choose Outlook Data file (PST) and click Next to start process
Choose mailbox folder to export the data. You can also add subfolders.
Now, it’s time to define location where new PST file can be saved. Before exporting Outlook mailbox items, check other options. Click Finish.
According to the mailbox file size, the process will be completed within few minutes. You can check new file at the defined location.

You can move the items to new Outlook PST file or use archive feature of MS Outlook. Manual tricks are often useful and helpful but it is not possible to use them on corruption of OST files. You can run scanost.exe if it is corrupt. It is the tool to check integrity of the files to conduct scanning of corrupt files.


In that case, you can use third party professional tools. This way, Regain OST to PST converter is a professional tool which is designed well to support corrupt and normal OST data and they can be converted into PST format in few mouse clicks. For beginners, manual tricks are very complex and time consuming. If you switch to professional tool, it can be whole lot easier for file conversion without eating up much time. It takes just a few minutes for the whole operation.