How to Convert OST To PST Manually – Free Complete Guide

Updated On - January 21, 2025 by Armaan | Reading Time: 7 minutes

Summary: Outlook is the most popular and useful email client where you get all your essential emails from your business partners or clients. Many users complain that their OST files get corrupted somehow, and they do not know how to repair them.

In this article, we will go through all the possible solutions and methods to convert OST to PST manually. Go through all the steps to export offline OST data files to Outlook PST files. We will also mention a Regain OST to PST converter tool to convert damaged or corrupted OST files to PST.

Why do your OST files get corrupted?

Over the internet, there are numerous reasons that your OST files get damaged or corrupted, and here we will mention the possible errors that will harm or corrupt your OST files.

• Malware or virus attacks
• Accidental power off the system.
• Auto crash Outlook profile while working.
• Bad sectors in the hard drive.
• Incompatible Outlook version

Why do users need to convert OST to PST files manually?

Exchange server corruption: Occasionally, the MS Exchange server is corrupt for various reasons; in that case, you cannot connect your Outlook emails to the Exchange server. To fix the Exchange server corruption issue, convert OST to PST manually.

Remove the Exchange Server account: When you accidentally remove your Exchange server account, all your OST data, i.e., emails, contacts, tasks, and other files, becomes inaccessible. To get backup all data need to convert ost to pst file.

Migrate Data from one place to another place: However, when your previous Outlook account gets corrupted, you want all your OST files in a new one. Make a backup copy of the PST file to regain all your data in the new account.

If you are worrying about how to convert OST to PST file manually? Then, don’t worry; we will recommend one of the best third-party Regain OST Converter tool to convert OST into PST files.

3 Simple Methods to convert OST to PST file Manually

Here we discuss Two Manual Methods and One Professional tool to migrate OST to PST files. You can select anyone which suits you.

• 1st Method: Use Auto Archive to Convert OST to PST file
• 2nd Method: Use Import/Export Feature in Outlook
• 3rd Method: Use Professional Regain OST Converter tool

Method 1: Use Auto Archive feature to Convert OST to PST file

The first method to convert OST to PST is to enable archiving in Outlook once your Exchange account is configured. When you enable archiving in Outlook, it automatically moves archived email into a new PST file format and helps maintain an optimal mailbox size.

Here, you need to follow the steps to configure Outlook archiving.

• Step 1: Open Outlook and hit the “File” option.
• Step 2: Click on the “Advanced” option, and a new wizard will open on the screen; select “Auto Archive Settings” in the “Auto Archive.”
• Step 3: In a new Window, select the number of days to run auto-archiving and hit “OK.”
• Step 4: Save your mailbox items from the OST file to PST by enabling the archiving option.

Method 2: Use Import/Export feature to Convert OST to PST

All MS Outlook versions are embedded with built-in import and export, allowing users to transfer OST data to a PST file quickly. This method only works when your OST file is connected to the Exchange Server while exporting. Also, it is useful when making a local and portable backup of Exchange Mailbox data.

Follow these steps to use Import/Export feature in Outlook:

• Step 1: Launch the MS Outlook application. Click on the ‘File’ tab >> “Open & Export” >> “Import/Export.”
• Step 2: Choose the “Export to a file” option and click the “Next” button.
• Step 3: Select the “Outlook Data File (.pst)” option, then click on “Next.”
• Step 4: Select the folder you want to convert into PST files and tap Next.
• Step 5: Click the “Browse” section to choose the destination folder where you want to save the PST file in your system. Now, hit the Finish button.
• Step 6: Add a password to your converted PST file or continue without it. The conversion process will start and end as per the data size.

Both methods will work when your data is low. To continue this method, you need Outlook permanently connected to the Exchange Server; therefore, it does not convert orphan, corrupted OST files. The possibility of data loss during conversion is also common in these manual methods.

However, many users claim they lost some of their data in that PST file. But if you don’t want to face any issues during OST to PST Conversion, I strongly recommend using the third-party OST Converter tool developed by Regain Software. It is an excellent tool with a wide range of features to make the conversion task quick and easy without losing your data.

Method 3: Use Professional tool to Convert OST to PST

One alternate solution to Convert OST to PST is “Regain OST File Converter” software. This tool allows you to convert OST files to PST quickly, and it is enhanced with some wide-ranging features that can save you much time.
For a better understanding, let’s look at the key features of this tool.

Free Download100% Secure Buy NowPrice: $39

An Expert Solution…

• Instantly Convert the OST file to PST format
• Repair OST File whether it is Corrupt or inaccessible
• Converts Single or Bulk OST files in a few clicks
• Supports selective conversion of Exchange OST files
• Have user-defined and Date-Based Filter options
• Save converted OST into PST, MBOX, PDF, vCard, HTML, EML, MSG, and many more
• Import OST Emails to Office 365, Gmail, Yahoo Mail, Outlook.com, and Live Exchange Server.
• Convert Any Size of OST file, with No file size limit
• Show a Preview of Convertible OST Emails before Saving
• Allow Users to Save 30 Emails per Folder Free of Cost
• Support all versions of MS Outlook & Windows OS

Step by step guide to convert OST to PST manually using Regain OST Converter tool:

• Step 1: Open OST to PST Converter tool.
• Step 2: Browse and Add damaged or corrupted OST files in the tool.
• Step 3: Now select the Folders on displaying windows that you want to convert into PST files and tap on Export.
• Step 4: Browse the destination folder to save your PST file in your system.
• Step 5: Click on Convert Now to start the conversion task.
• Step 6: If you want to import OST to the Cloud platform, Click the Cloud Migration button and select email client.

Conclusion
This article covers all the possible ways to convert OST files to PST format. If the methods mentioned above do not work correctly, there might be severe corruption in your OST files. Try the Regain OST to PST Converter tool and quickly export all your OST files into PST. This tool is very effective in converting multiple OST files at a time. Also, you can upload PST files in the cloud after exporting.

Frequently Asked Questions

Q1. Can I convert OST to PST without software?
A. Yes, you can manually convert OST to PST using Outlook’s Export/Import feature if the OST file is accessible.

Q2. Do I need Outlook installed to convert OST to PST?
A. Yes, Outlook is required for manual conversion as you’ll need to export the data from an active profile.

Q3. What if my OST file is corrupt?
A. Manual methods won’t work on corrupt files. Use a reliable tool like Regain OST Converter to recover and convert OST file to PST and many other email formats.

Q4. Can I convert an orphaned OST file manually?
A. No, manual methods require an active Outlook account. For orphaned OST files, you’ll need third-party tool like Regain OST to PST Converter tool. It makes all the repair task easily.

Q5. Will manual conversion retain my attachments?
A. Yes, exporting OST to PST manually keeps all attachments, emails, and folders intact.

Q6. Is manual OST to PST conversion safe?
A. It’s safe but can be time-consuming. Ensure you follow the steps carefully to avoid errors or data loss. Minor mistake will loose your data, So be care full.

Q7. How long does it take to convert OST to PST?
A. The time depends on the file size. Larger files may take longer to export manually.

Q8. Can I convert multiple OST files manually?
A. No, you can only convert one file at a time using Outlook’s Export/Import feature. Only Professional Regain OST Converter tool allow you to export multiple OST files to PST format.

Q9. What’s the biggest limitation of manual OST to PST conversion?
A. Manual conversion doesn’t work for inaccessible or orphaned OST files and lacks bulk conversion capabilities. To Avoid any restriction, Try Regain OST Converter tool.