Download Microsoft PST Repair Tool for Outlook[Free]

Microsoft Outlook is an email client used to manage emails. As it offers many features, it has become the top priority of people and businesses worldwide. The emails and other user data are stored in PST format, and thus, PST file is considered an essential part of Outlook. If you do not take proper measures to check the size of the PST file, it will increase over time and pose a risk of corruption. And if you face such kind of problem, then you need to repair the corrupted PST files.

In this article, I will explain the 4 most reliable PST repair tools to help you repair corrupted PST files within a few clicks.

Part 1: An Overview of PST Files

In this part, I will let you know what PST Files are and the reasons for PST file corruption.

1. A brief introduction to PST files

An Outlook PST file is a Personal Folder File. It handles storing email messages and other items on your systems, such as journals, notes, tasks, contacts, and other attachments. Any email message sent or received using MS Outlook is saved on your computer as an Outlook PST file.

2. What Might Arise PST Files Corruption?

Like Word and Excel files, PST files can become corrupted. When you attempt to open a PST file, if an error message appears on your screen, there is a chance that the file may be corrupt. There may be a number of causes for this, though. The following are a few of them that are most likely to result in PST file corruption:

Network Problems

Outlook PST files are sometimes stored on network servers. If your PST file is on one of these servers and the network experiences a problem, your PST file may become inaccessible to you. Plus, if the network server fails or any of its components fails, the PST file may also become corrupted.

Bad Sectors

Local hard disks on PCs have a tendency to develop bad sectors. Outlook PST files stored on them are easily corrupted. When this happens, you will be unable to access your PST files.

Wrong Way of Closing Outlook

Shutting down MS Outlook without properly saving your PST files can also corrupt them.

Presence of Malicious Software

It is not good to have malicious software on your computer. These viruses have the potential to corrupt important systems and PST files seriously.

If your PST file is corrupted, you will need to repair it to recover its important data. Repairing a corrupted PST file may be impossible without the use of PST repair tool. So, you need to know the best repair PST tools by which you can repair corrupted PST files in a safe and secure manner.

Part 2: 4 Most Reliable PST Repair Tools

Now, you know what PST files are and why PST files got corrupted. So, it's time to know the best PST repair tools by using which you can instantly repair PST files and recover emails.

1. Wondershare Repairit for Email

Wondershare Repairit for Email, the powerful PST repair tool, repairs damaged PST & OST files in Outlook in all email corruption scenarios.

repairit for email

Technical Specifications

Supported File Formats:

  • Outlook PST, OST

Computer Operating System

  • Windows 7/8/8.1/10/11
  • Windows Server 2012/2016/2019
  • MacOS X 10.11 – MacOS 12 (Monterey)

Hard Disk Space

  • 56 MB minimum space for installing


  • Individuals - $69.99 (1-year License)
  • Business- $79.99 (Perpetual License)



  • Repair damaged PST & OST Files in Outlook in all Email corruption scenarios, such as hard disk crashes & bad sectors, virus attacks & tojan horse, outlook corruption & malfunctions, improper shutdown procedure, etc.

  • Restore Outlook Emails deleted for a long time and extract the Email messages, folders, calendars, etc. within seconds.

  • Repair corrupted Emails and restore deleted Emails with a very high success rate.

  • Repair Emails in bathes without size limits and support to preview all of them before saving.

  • Compatible with Windows 7/8/8.1/10/11, Windows Server 2012/2016/2019, and MacOS X 10.11~ MacOS 12 (Monterey).

Pros and Cons of Wondershare Repairit For Email


User-friendly tool.

A portable device.

A demo version is available.

Well-optimized user interface.


Files can't be saved on trial versions.

Comparison with similar products

Compared with Digital video repair and stellar OST repair tool, Repairit for Email repairs both PST and OST corrupted files.


Repairit for Email is affordable and easy-to-use software. There is no need for any technical knowledge to use it.

2. SysTools OST Repair Tool

SysTools OST Repair Tool is one of the best Outlook repair software for safely repairing and recovering damaged PST files. It restores all of your data, including emails, journals, calendars, and so on.

systools ost recovery

Technical Specs

System Specifications

  • Hard Disk Space: 100 MB
  • RAM: 2 GB is recommended

Supported Editions

  • Microsoft Windows-11 ( 64 bit), 10, 8, 7 (32 bit or 64 bit) & Windows Server 2019,2016,2012 R2, 2008
  • Disk Types: GBT and MBR

Software Download

  • Version: 18.1
  • Size: 26.3MB


A free download option is available. If you want to buy this software, then you can purchase it at a cost of:

  • Home License- $49
  • Corporate License- $199
  • Technician License: $399



Key Features of SysTools OST Repair Tool

Feature 1: It saves the recovered PST files in various formats such as PST, MBOX, EML, DBX, and so on.

Feature 2: Faster scanning speed than other software.

Feature 3: It will recover data from any large file (80GB size also be recovered successfully using this SysInfo tool)

Feature 4: Recover data from encrypted PST files by using the snapshot feature.

Pros and Cons of SysTools OST Repair Tool


Outlook Recovery Software is available for both Windows and Mac devices.

At the same time, you can recover and export a large number of Outlook data files.

Complete data conversion without the risk of data loss or corruption.


Impossible to export Contacts and Calendars in standard file formats such as ICS and VCF.

Unsupported detailed data preview.

Comparison with similar products

SysTools OST Repair tool has multiple preview modes. Users can also preview the Outlook PST file before proceeding with the procedure. It has several preview modes for securely repairing PST files. However, the Kernel OST recovery tool, Shoviv Outlook PST Repair tool, and Voimakas Outlook PST Recovery tool do not have such features.


SysTools OST Repair tool is the ultimate solution for people who want to recover lost or damaged data from their Outlook profiles.

3. Stellar PST File Recovery Tool

Stellar PST Recovery Tool is a free download Microsoft PST repair tool. It extracts all information from the corrupted PST file.

stellar pst recovery

Technical Specifications

About Product

  • Version: 1.0.0
  • License: Single User
  • Edition: Professional, Technician, & Toolkit

System Requirements

  • Processor: Intel-compatible (X86, X64)
  • Memory - 4 GB (8GB recommended)
  • Hard Disk -250 MB for installation files
  • Operating System- Windows 11, 10, 8,1, 8, 7


You can test the software before purchasing it by downloading it for free. If you want to buy, the plans are available.

  • Professional License- $79
  • Technician License- $149
  • Tool Kit License- $199



Key Features of Stellar PST File Recovery Tool

Feature 1: This tool recovers deleted emails from Outlook Mailbox's Inbox and "Deleted Items" folders.

Feature 2: It displays a tree-style preview of the items that can be recovered from corrupted PST files. As a result, the user can retrieve individual emails from the preview.

Feature 3: This software allows you to save the recovered PST file to any location you want. It includes the system's internal storage, an external hard drive, or network storage.

Pros and Cons of PST File Recovery Tool


An easy-to-use tool with an attractive design.

Recovery of emails lost after deletion from the deleted items folders.

The Technician version allows for both recovery and division of large PST files.


It is quite an expensive tool.

Comparison with similar products

This is the only PST repair tool that compacts the fixed PST files. On the other hand, PST repair tools such as Aryson Outlook Repair tool, Voimakas, and DataNumen do not have this feature.


Stellar PST File Recovery Tool is a reliable and convenient tool. It allows even those without much technical knowledge to fix Outlook PST files.

4. Kernel OST Viewer

From broken and damaged PST files, the Kernel OST Viewer will repair and recover all Outlook data files.

kernel ost viewer

Technical Specification

System Requirements

  • Minimum Memory Requirement: 64 MB
  • Disk Space Requirements- 50 MB of Free space

Supported Versions

  • Windows OS Platforms: Windows 365, 11, 10,8,8.1,7, Vista, XP, 2000, 98, NT & 95.
  • MS Outlook: Outlook 2019, 2016, 2013, 2010, 2007, 2003, 2002, 98 & 97.
  • MS Exchange Server: MS Exchange Server 2019, 2016, 2013, 2010, 2007, 2003, 2000, 5.5 & 5.0


A free download option is available. Moreover, the purchase plans are as follows:

  • Home License- $69
  • Corporate License- $199
  • Technician License- $299



Key Features of Kernel OST Viewer

Feature 1: Decrypt and repair PST files.

Feature 2: Restores the integrity of a corrupted or damaged PST file.

Feature 3: Protecting the properties of recovered emails, such as to, from, subject, date, time, Bcc, etc.

Pros and Cons of Kernel OST Viewer


Supports all versions of Outlook.

Engaging user interface.


Average performance.

The batch recovery feature is unavailable for Home and Corporate licenses.

Comparison with similar products

As compared with similar PST repair tools, Kernel OST Viewer can open damaged and password-protected OST files. Moreover, users can copy and take out the Xerox emails in TXT and HTML format.


The strong algorithms in the Kernel OST Viewer can repair highly corrupted PST files. And, it also restores every email item with its original characteristics intact.


  • Q1. Is the software immediately available after purchase?

  • A1: Within 15 minutes, the license key is delivered to the email or phone number you used to obtain it.

  • Q2. Is this software only available for a limited time after we purchase it?

  • A2: There are various PST repair software plans available. Some are valid for a lifetime, while others are only valid for a year or for a limited time. The validity of your PST repair software is determined by the pack you buy.

  • Q3. What exactly is the Microsoft PST repair tool?

  • A3: The free download Microsoft PST repair tool is made to assist in fixing issues with PST files.


Everything is done now. I have explained the 4 most reliable PST repair tools. I hope it will be quite easier for you to choose the right PST repair tool for the purpose of repairing your corrupted PST files. However, I recommend you to go with Wondershare Repairit for Email. This is because this tool repairs corrupted emails in a well-secured environment.