Why to Convert OST into PST? How to Do It Manually?

These days, Outlook is a very indispensible email client and a boon to desktop users. Virtually every single desktop user knows very well about MS Outlook along with its significant benefits for email conversations. Be it is a company employee or home user, everyone is using emails for communication with friends, family, business clients and coworkers. Despite having plenty of options out there, Outlook is the best email client and emerged as a first priority of every email user. In this guide, we are going to discuss two of the widely used Outlook file formats – OST and PST, and why we should convert OST into PST.


About Outlook Email Files

As an Outlook user, you have to know about the file where all your emails are stored by this email client. Outlook email files are created and stored in your Windows PC where your profile is configured. These data files store all your contacts, emails, tasks, calendars, notes, attachments and journals. Offline Storage Table (OST) and Personal Storage Files (PST) are two different types of data files. Though both of these data files are used for same purpose, they are different.

If Outlook is used as only email client on desktop, PST file is created automatically on your system where all your mailbox items are stored. If Outlook is connected to Microsoft Exchange Server, all your email data will be stored in Exchange Database or EDB files on the Exchange Server. It creates OST files on local system (if setting is enabled) to store all the email items. This file can be used in offline mode.

Why Convert OST into PST?

There are certain scenarios which call for OST to PST file conversion. Here are some of the common situations when you have to perform OST to PST conversion –

When Exchange Server Crashes

Microsoft Exchange Server is vulnerable to suffer severe problems at some point of time. Out of various common errors, unexpected system crash is the most widespread issue in Exchange Server, including virus attack, malicious program, unexpected system shutdown etc. Sometimes, these errors make your Outlook profile inaccessible and you cannot connect to the Server. It may lead Server Administrator to trouble. You have to wait to repair Exchange Server. In that case, you have to perform OST to PST file conversion.

When Exchange Server is under Maintenance

Regular maintenance is very important for Exchange Server to work properly. However, there is a problem! You will no longer be able to access your mailbox until maintenance work is done. Sometimes, it is very important to access mailbox items. Despite having OST data stored somewhere on your system having mailbox information, you can still not sync the data with Exchange Server. In that case, OST to PST conversion becomes important.

When OST File is Corrupt

Your OST file is also vulnerable to corruption issues. Due to this reason, it can go inaccessible. Even worse, there is no effective tool to repair OST in the market. The only way is to convert OST to PST file to restore your mailbox with a professional OST to PST converter. An Integrity Check tool is already offered by Microsoft, which is also known as scanost.exe. But it doesn’t work on severe corruption issues.

When Mailbox Migration Needed

When it comes to transfer mailbox items from one place to another, it is very important to convert OST into PST. OST files can be accessed only on the system where it was created originally. You can easily convert OST into PST to avoid this issue. Now it will allow you to access mailbox on any PC.

To Recover Mailbox when it is Deleted Accidently

If you have deleted the Exchange Server mailbox accidently, it can easily be recovered with OST to PST file conversion.

These are the most common cases when you need to convert OST files into PST to access your Outlook mailbox.

How to Perform OST to PST Conversion?

When it comes to OST to PST conversion to transfer mailbox items, here is an easy manual trick. You don’t need to have any paid program to perform this trick. Confirm the following things before you continue with this trick –

  • MS Outlook is online and linked to Exchange Server
  • Use the same PC where OST data is created originally

First off, create a new file.pst in MS Outlook while working on your workstation. It is the matter of few minutes. Follow these steps after creating the new PST file –

  • Launch Microsoft Outlook on your PC
  • Go through File > Open > Import on main menu
  • Choose “Export to a File” on “Export & Import Wizard”. Continue the process by clicking on Next button.
  • Choose .PST (Outlook Data File) on “Export to a File” window and click on Next.
  • When you access Export Outlook Data File, choose the folder and data file to export files. You can also add subfolders. Click Next.
  • Click Browse and choose the already created PST file. This way, mailbox data will be exported from desired folder to a new PST file. Before you click Finish button, there are other options to define.
  • Click on “Finish” button and wait for export process to complete successfully.
Professional Alternative to Convert OST to PST

Though manual trick is very easy to understand and effective. But it doesn’t make sense if you have no connectivity to the Server and not having the system where OST mailbox was created originally. In that case, Regain OST to PST Converter is a professional and efficient tool for OST to PST conversion without any issue.

With a normal converter, only normal OST files will be converted, not corrupt ones. If you want to convert even the corrupt OST file data, it is always best to use professional OST to PST Converter software which supports both corrupt and normal OST files. You can easily perform OST to PST conversion through this software. It also supports other formats like MSG, EML file format.