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SysTools OST Recovery

(Average Rating 4.7 Based on 1774 Reviews)

SysTools OST Recovery Tool is best rated software to fix & recover OST emails from corruption or damage. Download Free Demo version of Exchange OST File Recovery & extract data from OST & NST File like Mail, Calendar, Contacts, Notes, Task & Journal. It supports to Recover OST file created by IMAP, Office 365, Exchange Account, and Outlook.com

  • Extract & Recover permanently deleted emails from OST files
  • Ensures to Recover Email, Calendar, Contacts, Notes, Task & Journal
  • Rebuild & Restore OST file into
  • Supports to Fix Corrupt OST as well as Outlook NST File
  • Decrypt OST File emails by Removing S/MIME & OpenPGP encryption
  • Search within All or Selected Drive & Recover Multiple OST File new feature
  • Capable to recover inline images from Microsoft Outlook OST file top 10
  • Support to recover .bak file created by SCANPST.EXE when fixing OST file issues new feature
  • Display Deleted OST items in Red Color after Recovery best tool
  • Apply Filters by Date Range & restore emails from OST with Selective Items / Folders
  • Software Support to recover .bak file data in Microsoft Outlook new feature
  • Split exported File into Small size to avoid large-sized corruption issues
  • Simply install it, and you'll have access to it in several other languages.
  • Maintains Email Metadata like Read / Unread Status & Message Dates
  • Supports MS Outlook 2021, 2019, 2016, 2013, 2010, 2007 & All below versions
  • Supported running the software without admin privileges as a Standard/Guest user.
  • Supports to Recover OST file of both Compressible & High level Encryption
  • No File Size Limitation for recovering orphaned OST File

Free Live Demo: – SysTools OST Recovery Fully Secured Download Version

SysTools OST Recovery Software - Review & Ratings

Know experts reviews and rating for this wizard to recover damaged OST file data

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Features of The Best OST Recovery Software

Support to recover complete data from damaged .ost file in problem free way

recover selected ost

Save Selected Data After Recovering from OST

Suppose you want to save only few emails after performing OST recovery. It means that, you need a utility which can save only selected files. Instead of exporting complete data. So, I recommend you to use SysTools OST file recovery software and save only selected files.

ost restore free

Remove S/MIME & OpenPGP Encrypted OST File Emails

OST file is encrypted and you are unable to access. The SysTools OST file recovery tool is capable to remove S/MIME and OpenPGP encryption from .ost file easily. The software is programed to remove encryption from any size .ost file. Also the OST recovery wizard will provide you two scanning option i.e. Normal Scan and Advance Scan.

retrieve ost

Option to Search OST file from Your Computer

If you are not aware with the default location of OST file on your system. Then use Search feature of this OST recovery wizard. The software provides option to search .ost file from specific drive or complete drive.

Steps to perform OST File Recovery:

  • Step 1: - Download and Install OST Recovery Wizard
  • Step 2: - Browse or Search OST file using Software Panel
  • Step 3: - Preview OST file emails and select to extract
  • Step 4: - At the last Save recovered emails with attributes

SysTools OST Recovery Software - Features

Restore corrupt & damaged OST file of Outlook 2019, 2016, 2013, 2010, 2007

restore OST file

Restore Deleted OST & NST Data

SysTools OST Recovery Tool can restore all permanently or hard deleted emails from OST file in Outlook 2019, 2013, 2016, 2010, 2007 like; deleted emails, contacts, tasks, calendars etc. It also supports to recover .bak file (created by SCANPST.EXE / Inbox repair Tool). After recovering BAK, NST & OST file, the OST Data Recovery tool save the restored file into top 10top 5 & make data MS Outlook accessible. The OST Fix tool displays recovered emails to users in Red Color in the preview panel.
Note: BAK, NST & OST File with Unlimited Size get successfuly restored with Exchange OST Recovery software

scan OST File

Fix OST File - Low & High Corruption

Two scanning modes are available to rebuild damaged OST file in Outlook 2007, 2010, 2013, 2016, 2019, 2021 i.e. Quick scan and advanced scan. Quick scan is to recover OST File data for less corrupt OST file and advance scan option is for severely corrupt OST file. Now, the OST & NST Recovery software performs Quick scanning by default to rebuild OST file in Outlook 2021, 2019, 2016, 2013, 2010, 2007, 2003 .

scan OST File

Restore from Single or Multiple OST File

This OST Restore Tool Provides two option to browse & add OST File for recovery:

  • Select File : Enables users select single OST file for recovery
  • Search File : Enables users to Search OST Files within Selected or All Drive for Batch OST Recovery

restore OST file

Auto-Locate OST File for Recovery

This Utility provides "Search File" Option which enables user to search OST in following two ways & recover only selected OST File

  • Search Selected Drive: This enables users to search with Selected Drive (eg- C:, D:, E: etc.)
  • Search All Drive: This enables users to search OST from all the Drives.

Decrypt OST Emails

Decrypt OST Emails from S/MIME or OpenPGP Encryption

The OST Fix Tool by SysTools is capable to Decrypt OST Emails & remove Encryption from OST emails which are encrypted with S/MIME or OpenPGP. Users simply need to check "Remove Encryption" checbox to decrypt SMIME / OpenPGP Encrypted emails in selected OST file.For this you need to provide associated Certificates (with passwords) to decrypt S/MIME encrypted emails or Private Keys(with passwords) to decrypt OPENPGP encrypted Emails

preview and scan OST Outlook 2013

Preview OST File Data with Item Count

After recovery, the OST File Recovery software generate an instant preview of all OST file components like: Email, Calendar, Contacts, Notes, Task & Journal etc.; with its item count. After scanning, utility displays only those Folder name in Bold, which contains data for quick access. Also, orphaned OST recovery will display emails in normal mail view with associated attachment preview while you fix corrupt OST file.

restore OST file

7+ Views Option With Meta Data After OST Recovery

OST Recovery Tool provides 7+ Preview Modes: Normal Mail View, Hex, Properties, Message Header, MIME, HTML, RTF and Attachments to preview Recovered OST File attributes. This enables users to inspect recovered OST File Properties in specified way for detailed analysis. Office OST Fix tool ensures to keep Meta properties like To, Cc, Bcc, sent date, received date etc.; intact. Also, the original formatting of all items remains as original after the process to rebuild ost file of Outlook.

maintains meta data

Save as save option with Customized Settings

OST Recovery tool supports to recover & save OST as save option after successful recovery of the file. It provides Multiple Options to customize the save option that you need to export :

  • save option Page Margin : User can Specify Top, Bottom, Right, Left Margins required in Page
  • save option Paper Orientation & Page Size : User can Specify Paper Orientation in Landscape & Potrait Mode & Page Size (A3, A4, letter)
  • save option Bates Numbering & Page Stamping : User can Specify Bates Numbering (Starting, Increment by & Position), Stamping Position & Format

save selected items

Extract Selected Items from OST File / Folder

On saving selective emails or items from the recovered OST file; check or uncheck respective items and click export to extract emails, contacts & calendars from OST file as per your need. Also, with this you can Select and check the specific file or folder that you want to export in bestsoftware. The OST Fix tool will only rebuild corrupt OST & save files / folders that are being marked with a check.

selective file & folder

Discard Empty Folders Automatically

OST Recovery Tool provides "Don’t Export Empty Folders" checkbox option which enables users to exclude Folders which are empty. To avail this option you need to first uncheck " Maintain Folder Hierarchy" option. This will recover only folders that have data & skip all empty folders.

OST folder structure

Maintains OST Email Folder Structure

Outlook OST Restore Software maintain the internal folder structure of OST file as it is, while creating recovery file. There will be no changes done in the internal hierarchy of files or folders after you fix corrupted OST file.

OST mail filter

Apply OST Mail Filter to Recover Emails

While restoring & extracting data from OST file; you can specify date range to apply mail filters. Thus; you can recover damaged OST file & save all email or items within these date range with the help of OST Fix tool.

multiple saving options

Multiple Message Saving Options for OST

After recovery of OST data, you can extract the OST file into multiple e-mail message formats like; OST or .eml or .msg. Each of these formats can further be used in various email archiving applications and email clients like; Outlook, Outlook Express, Windows Mail etc.

download wizard

Divide Recovered Files by Size

While extracting OST data into PST, you can apply the wizard split option to break the resultant utility file into multiple parts. Specify the size in GB and the software will create several best files of same size.

save & Load scanned OST file

Save & Load Scanned OST File Easily

The OST file Recovery tool enables the user to save an OST file in Outlook 2019, 2016, 2013, 2010, 2007 once it has been scanned. The scanned file can be later on loaded when required, thus enabling the user to save time from re-scanning the same OST file while you fix corrupt OST file.

no ms outlook required

Fix OST File Without Microsoft Outlook

The Outlook OST file Rebuild software gives the provision to extract data from OST & NST file into different file formats with MS Outlook as optional component in the user machine. The user can perform complete OST & NST Recovery and save OST File independent of Outlook.

recovery report

Get Complete OST Recovery Report

After the complete OST file restoration; a Final report will get generated by the OST Recovery software. The report will contain the details of restored mailboxes and path of saved files. After you rebuild OST File, you can save this report in .csv file format for future reference when you restore data from OST File.

different naming

Different Naming Options to Save Recovered Files

If you select .eml or .msg format to extract the OST file emails then Exchange OST Recovery software will provide you an option to choose the appropriate naming convention to save the emails. read more

Download OST Recovery Software – Specifications

Use the Free Trial Version and Know how to Recover Damaged OST File in Hassle Free Way?

Software Download

Size : 86.2 MB

Version : 9.0

MD5 : 6b4ebc68c73e18174221836a8e67916f

Trial Limitations

The free demo version of SysTools OST recovery wizard will export only 25 items per folder.

Note: To Export Contacts, Calendars, Tasks, Notes, Journals in PST format, Check 'Use Outlook (Requires Outlook to be installed on machine)' option on Export Option Window

System Specifications

Hard Disk Space
100 MB of free hard disk space required


Intel® Core™ 2 Duo CPU E4600 @ 2.40GHz 2.39GHz


  • Microsoft .NET framework 4.5 or above should be installed.
  • Exporting in PST Format:
    • MS Outlook installation is required, if using 'Use Outlook' option in Export Option Window.
  • Exporting in Office 365:
    • Admin account of Office 365 must be Impersonated, if migrating to Admin account.
  • For Remove Email Encryption option:
    • Certificates and respective passwords to decrypt SMIME encrypted Emails.
    • Private Keys and respective passwords to decrypt OPENPGP encrypted Emails.

Supported Editions

  • Microsoft Windows – Win 7 / 8 / 8.1 / 10 (32-Bit & 64-Bit), Windows 11 (64-Bit) & Windows Server 2008 / 2012 / 2016 / 2019 / 2022
  • Microsoft Outlook – 2000, 2003, 2007, 2010, 2013, 2016, 2019, 2021 (32-Bit & 64-Bit)
  • Office 365 – Enterprise E1 / E3 / E5 / Business Premium / Essentials & Exchange Online Plan 1 / Plan 2 & Office 365 A1 / A3 / A5 / F1


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Request For Software Customization

If you need to customize Outlook OST Recovery or need additional features then, Request Quote

Feature Comparison of OST Recovery Software

Get an Overview of OST File Recovery Features – DEMO and Licensed Version

Features DEMO Version FULL Version
Add Single or Bulk OST Files
Auto Locate OST File on Selected / All Drives
Decrypt OST Emails from S/MIME or OpenPGP Encryption
Quick and Advance Scanning Option
View Emails with Attachments
Recover Deleted Email from OST Files
Support Windows 11, 10, 8, 7 and below versions
Split PST by Size
Save Recovered OST into PST, EML, MSG, HTML, PDF & Office 365 25 Emails/Folder All Items
Cost FREE $49

Common Questions Asked by User

Know How to Perform the OST Recovery in Simple and Hassle Free Way

How Can I Use SysTools OST Recovery Tool for Microsoft Outlook?

“Hello I am using Microsoft Outlook 2016 and some emails deleted from OST file. Now I want to use SysTools Software. Please list all steps to use this OST recovery wizard.”

OST recovery

5 Steps to Perform OST Recovery:

  • Step 1 –: Download OST Recovery Software and Install
  • Step 2 –: Browse or Search OST file using Software Panel
  • Step 3 –: Remove S/MIME & OpenPGP Encrypted OST File
  • Step 4 –: Preview Recovered Data into Recovery Wizard
  • Step 5 –: Save all recovered files and folders in hassle free way

OST file, also called offline storage table file, is an offline Outlook Data File used by Exchange Server that enables you to work with mail or another data even when server access is not available for Server. OST files are created when Microsoft Exchange Server’s Cached Exchange Mode is enable.

Default Location of OST File:

  • Windows 10 & Windows 8,7: C:\Users\user\AppData\Local\Microsoft\Outlook\
  • Windows XP: C:\Documents and Settings\user\Local Settings\Application Data\Microsoft\Outlook\

By default OST file is created by the name Outlook.ost

The software will allow you to add multiple OST file at a time in order to fix OST file data. Thus, you can perform bulk export with "Search File" option & Select "Search Selected Drive" or "Search All Drive" to batch fix corrupt OST file.
Yes, the software provides support to recover NST file of Outlook 2016, 2013, 2010 & below versions . First you need to rename .nst to OST & browse the OST file into the software & restore damaged OST file.
No, you can recover any size of OST files with this OST file Rebuild software. It does not impose any restriction on the size of OST files & helps you fix broken OST file & restore deleted ost file data.
The software will create a UNICODE best file which can be used in all latest version of Outlook including MS Outlook 2021, 2019, 2016, 2013, 2010, 2007, 2003 versions.
No, you do not require an Exchange Server environment to recover corrupt OST file. The OST Fix tool can recover orphan OST file also.
To extract data from OST file, it is not necessay to have Outlook installed on your machine and if it is installed then it should also be configured with any valid or dummy profile/account. Learn how to install and configure Outlook in machine.
Yes, OST file Recovery software will easily recover corrupted or damaged OST files & will save OST file items into
The need to recover damaged OST file or Offline Outlook Data Files may come across in the following conditions:
  1. Change In Environment: In case, change in environment is required. OST file data can be recover & saved in EML or MSG format due to the common availability of Microsoft Outlook & other email client in most of the office and home based environments.
  2. Data Independence: OST file is created when Exchange Cached Mode is activated. Thus, it has a dependence over Microsoft Exchange Server. To break this dependency, you can export Offline Storage Table File (Outlook OST) to Personal Storage Table file.
  3. Overcoming Sync Issues: "Error 8004011D-526-80040115-0" is very commonly faced error, especially by Outlook 2007 users. The error is generated when, the OST file you are trying to synchronize with a mailbox on Exchange, is found to be corrupt. fixing OST file frees you from such obligations which results in saving your time as well as efforts.
SysTools OST Recovery software not only helps to recover corrupt OST file but also provides option to save data from OST file. Thus, the output files (MSG or EML) can be used on respective email clients like; MS Outlook (standalone), Windows Live Mail, Outlook Express, Windows Mail, etc.

"I wanted to perform the recovery of OST file and access it in outlook. Just wanted to know whether the software makes any changes in the data after I rebuild OST File file or not?"

No, the software does not make any changes to the data or the metadata to recover emails from OST files. Contents of your OST file will be kept absolutely safe throughout its recovery process by OST file restore software.

"Before using the software for Exchange OST recovery freely, I closed down Outlook. Then, why does the software keep on telling me that the OST file cannot be accessed as it is in use?"

If you are getting the error "Exchange OST is in use and can't be accessed" even after closing all possible applications that may use the file, then probably it must be occurring because one or more of the closed applications is running in the background due to improper closure. Kindly follow the given steps to close them:
  1. Right click on the Taskbar and select 'Start Task Manager' or simultaneously press CTRL+ALT+DEL keys and select 'Start Task Manager'.
  2. Go to the Processes tab.
  3. Click on outlook.exe and click on End Process.

This will help you get rid of the problem successfully without the need of restarting either the application or the computer.

"I am working with the Exchange and Outlook 2013 (64 bit). I wanted to know how to access corrupted OST file in Outlook 2013? And what all versions of the mail client and mail server are supported by the OST Data Recovery tool?"

SysTools OST Recovery is supportive towards all available versions of the Outlook as well as Exchange Server.
Outlook: 2000, 2003 to 2010, & 2013 (32/64 bit), 2016 (32/64 bit), 2019, 2021
Exchange: 5.5, 2003, 2000, 2010, 2007, & 2013 (32 & 64-bit)
If you want to restore Outlook contacts from OST file then the user can use SysTools OST Recovery software. This will helps the user to recover OST file contacts easily.
If you want to save all emails from Outlook OST file then the user can use OST file recovery software. This will helps the user to save file OST emails in various file formats.
Like any other files this OST file can be corrupted due to possible reasons discussed below:
  1. Availability of bad sectors on the hard drive.
  2. Abnormal termination of Outlook Application.
  3. Due to Sudden Power loss.
  4. Incomplete Outlook add-ins.
  5. Due to Virus or Malware Infection.

Note: In case if you are facing OST file corruption problem. Then the user can try the OST Recovery software to recover crucial OST file data.

Yes, you can use this OST data recovery software to recover permanently deleted Outlook emails from OST file.
Yes, Scanpst can be used to scan both the Outlook data files OST and PST. But this will help to resolve minor level corruption issues. So, in case of severe corruption of the OST file, the user can take the help of OST Recovery software to recover crucial mailbox items.

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