OST File Repair Tool to Fix Corrupted OST Files Easily

OST File Repair Tool

2M+Downloads

The OST File Repair tool allows you to repair corrupt, damaged, or inaccessible OST files without altering the folder structure. It scans the OST files thoroughly to remove severe corruption and make them healthy. Moreover, its user-friendly interface makes it easy for users to navigate and repair the OST files.

Download the free trial version and migrate 25 items per folder.

Repair single or bulk orphaned Outlook OST files simultaneously with ease.

Embedded with advanced algorithms to auto-locate OST files from the local system.

Repair OST emails, attachments, contacts, calendars, tasks, and other mailbox items.

Move OST mailbox data to various formats, like PST, EML, MSG, MBOX, PDF, DOC, etc.

Directly migrate OST files to different web-based email clients and email servers.

Preserve OST mailbox data in its original folder structure and formatting.

Easily repair and convert OST without Outlook. No need to install additional applications.

Provide a free trial version to repair and preview the OST file data.

What Expert Say

Meir Peleg, System Administrator

I was stressed when my OST file stopped syncing and Outlook wouldn’t open properly. I tried many tools, then I found Kernel OST File Repair tool and decided to give it a shot. It worked pretty well and repaired my file without any damages. I would recommend using this tool to others as well.

Noel Pulis, CEO

What I liked most about the Kernel tool is how user-friendly and simple it is. I’m not an IT expert or some professional, but I was able to repair my OST file without needing any outside help. The process was so simple and the results were accurate as I expected.

OST File Repair Tool Prime Features

Analyze all the advanced features of the OST File Repair tool for easy and error-free results.

Repair corrupt/inaccessible OST

The OST Repair tool deeply scans the OST file, identifies the corruption issues, and rebuilds it to its original state. It efficiently handles severe corruption, be it header damage or data fragmentation, and prevents future data loss and corruption issues.

Repair unlimited OST files or folder

The tool allows users to add unlimited OST files or folders and repair them simultaneously without leaving any trace of corruption. With the advanced repair algorithm and ability to repair bulk files, users can manage their data efficiently.

Customize OST repair with filters

Users can selectively repair and recover OST mailbox emails, contacts, or attachments and filter out all the unwanted OST file data. This customization feature helps to reduce the recovery time and minimize unnecessary data restoration.

Save repaired data in multiple formats

Save the repaired OST file data into multiple file formats, such as PST, EML, MSG, HTML, PDF, DOC, MHT, and more. This flexibility allows users to choose the best format that suits their needs for smooth integration with other platforms.

Move data to email servers/cloud services

Directly move OST mailbox data to email servers, like Microsoft Exchange, Office 365, and others, as well as into cloud services like Yahoo, Gmail, Outlook.com, iCloud, etc. The software makes it a convenient choice for users to move data.

Preview recovered OST mailbox items

Get a detailed view of repaired and recovered data from the inaccessible OST file in the user-friendly preview pane, with email headers, body content, and attachments. Browse through the data and verify it before saving it for complete accuracy.

Find a particular email message

The software offers an advanced Find feature which allows users to look for a specific email message quickly, especially when they have a large OST mailbox, based on sender, recipient, subject, received before, received after, and message has attachment.

No OST file size restrictions

With this software, you can repair OST files of any size, be it a small personal file or a large corporate file; the tool can handle it with ease. The software’s ability to handle oversized OST files makes the repair process easy for users without worrying about data loss.

Repair OST without Outlook -Pro

Repair and convert OST without Outlook using the upgraded OST Converter Pro version. It lets you export OST data to multiple formats and allows you to extract attachments and email addresses from the source file without disrupting the formatting.

How to repair corrupt OST files?

Here is the step-by-step process to repair and save corrupt/inaccessible OST data using the OST File Repair tool:

Step 1: Download and open the OST File Repair tool on your computer.
Step 2: Browse to upload corrupt OST files and click Next to start repairing.
Step 3: Select any file/folder to preview data, then click on the Save button.
Step 4: Select any of the saving formats, then click on the Next button.
Step 5: Apply all the required filters and click Next.
Step 6: Click on the Browse button to define a saving location and click Finish.

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OST File Repair: Trial and Licensed Version Features Comparison

Check out all the features offered by the trial and licensed version of the OST File Repair tool.

Software Features	Trial Version	Full Version
Allows you to add single or multiple OST file(s)
Restores and repairs entire OST mailbox items
Advanced filter options for precise OST repair
Compatible with large OST mailbox
Offers a detailed preview of repaired OST data
Supports all Outlook and Windows versions
Repair unlimited OST file(s)
Save OST data into other formats.	Allows to save 25 items per OST file	Save unlimited OST data
	Free Download	Upgrade Now

Frequently Asked Questions

How to identify OST file corruption?

Here are some signs that indicate an OST file is corrupted or near corruption:

Outlook keeps crashing or freezing.
Some emails or contacts are missing.
You can’t send or receive emails properly.
You see error messages when opening Outlook.
Synchronization issues in Outlook with the server.

What is the fastest way to repair OST file?

The OST File Repair tool is the fastest solution to easily resolve OST corruption and inaccessibility issues in no time.

Do I need to install Outlook on my system to repair OST file using this software?

No, you do not need to install Outlook on your system to use this software. Simply download the tool and start the OST file repair process.

Is there any limitation with the free OST File Repair trial version?

The free OST File Repair trial version repairs all the OST file data, but allows you to save 25 items per OST folder only. For uninterrupted OST repair and conversion, upgrade to the full version.

Can I repair bulk OST files with this software?

The OST Repair tool supports adding bulk files simultaneously and repairs them instantly without losing their integrity.

Is ScanPST safe to repair OST file corruption?

ScanPST (Inbox Repair Tool) is quite safe to repair OST file corruption, but it has limitations. It’s best for basic/minor errors in OST files (small size).

OST File Repair Tool Prerequisites & Recommendations

About Software

Version: 26.0

Release Date: Dec 2025

License Type: Personal, Home, Corporate & Technician

Version Support

MS Exchange Server: 2019, 2016, 2013, and earlier versions

MS Outlook: Office 365, 2021, 2024, 2019, 2016, and previous versions

Outlook Express: 6.0, 5.5, 5.0 and 4.0

System Requirements

Hard Disk: 50 MB of disk space

Memory: 128 MB Minimum

Processor: Intel® Pentium Processor compatible (x86, x64) or equivalent

Operating System: Windows 365, 11, 10, 8.1, and older versions, Windows Server 2022, 2019 & older versions

Installation Guide

User Manual

EULA

What customers are saying about OST File Repair

(4.9/5) 852 Reviews

Impressed with Kernel for OST to PST

Efficiently migrated my offline OST file without any data loss. A reliable and user-friendly tool that did the conversion accurately. A must-have tool.

Sudeep Ramachandraiah
MIT Services - Head - Business Development