Wondershare Repairit
Email Repair

Perfectly repair and recover corrupted Outlook PST & OST files.

  • Fix all Outlook Email issues on Windows and Mac in various scenarios.
  • One trick to fix corrupted PST & OST files in Outlook.
  • Restore Outlook Emails deleted for a long time and extract important Email messages, folders, calendars, etc.
  • Perfectly compatible with Windows & Mac devices.
email repair

Repair Outlook PST and OST Files for Free

There are a number of tools designed for communication purposes, like sharing documents, media files, notes, images, calendars, and more. Outlook is one such utility that is used by 400+ million people across the world. Every data you share with Outlook is stored on PST or OST files. If your PST/OST file has a huge size or it is corrupt, Outlook may crash at times.

Similarly, a corrupted or damaged PST/OST file will not allow you to access emails and other data. Are you facing the same thing? Don’t worry! You can now repair corrupted PST or OST files in a matter of minutes. This article lists potential reasons behind the PST/OST file corruption and proven solutions to get out of this trouble.

Part 1: 5 Common Reasons for Outlook PST/OST File Corruption

Before we explore the solutions to repair corrupted OST/PST files, it is crucial to get familiar with the potential reasons associated with this problem. Below, we have listed the most common reasons behind the file corruption. Let’s look at them one by one.

1. Outlook Not Closed Properly

Most of the time, users don’t close Outlook properly. It often results in corrupting your OST/PST files. Therefore, when you finish working on your Outlook file, make sure you close it properly to protect your data.

2. Large File Size

Outlook 2003 and 2007 used to support up to 2GB of the file size. It was increased to 20GB in Outlook 2010. When your file size exceeds this threshold, Outlook’s performance is affected. This is when you see delays in sending your messages and accessing emails. It is the earlier symptom. If the file size keeps on increasing day by day, it may result in corrupting your data files.

3. System/Outlook Crash

An Outlook file can crash at any time due to hardware problems, software issues, or operating system concerns. The same is the case with your system. If your system or Outlook crashes when you are working, it can lead to PST/OST file corruption. If the system crash is severe, it can make data recovery impossible.

4. Sudden Power Failure

This is a common problem around the globe. Don’t forget to connect your system to a continuous source of power supply. It will help you keep your data files safe and protected.

5. Incompatible Outlook Version

If your OST/PST file is not compatible with your Outlook version, you may experience a file corruption problem. To avoid this issue, always make sure to check that your Outlook version and PST/OST files are compatible with each other.

Part 2:PST Repair | Outlook Inbox Repair Methods to Fix Corrupt PST File for Free

Now, you are familiar with how your PST file can get damaged. Let’s explore some effective ways to get rid of this issue. Before we move toward repairing corrupt PST files, exit your Microsoft Outlook application and visit one of the locations listed below.

● Outlook 2007: “C:\Program Files (x86)\Microsoft Office\Office12”

● Outlook 2010: “C:\Program Files (x86)\Microsoft Office\Office14”

● Outlook 2013: “C:\Program Files (x86)\Microsoft Office\Office15”

● Outlook 2016: “C:\Program Files (x86)\Microsoft Office\root\Office16”

● Outlook 2019: “C:\Program Files (x86)\Microsoft Office\root\Office16”

1. Use the Inbox Repair Tool

With the ScanPST.exe inbox repair tool, you can make your corrupted PST files accessible. For this, follow these steps carefully.

Step 1. Open the scanpst.exe file on your system.

open the scanpst file

Step 2. Now, select the corrupted Outlook file by tapping on the “Browse” button. Then, hit the “Start” button, as shown below.

scan a corrupt pst file

Step 3. If you see some errors while scanning, tap on the “Repair” button.

repair a corrupt pst file

Step 4. As soon as the repair process is completed, open an Outlook account with the same ID as associated with the file you just fixed.

Step 5. The inbox repair tool creates a backup file when repairing. The name of the original or backup file remains the same, but backup files get the extension of “.bak”. If you are looking forward to recovering items from a backup file, don’t forget to make its copy and rename it with a new extension, i.e., “bak.pst”. For example, joss.buttler@outlook.com.bak.pst.

Now, import your bak.pst file into Outlook. For this, open the Outlook application and go to the “File | Open & Export | Import Export | Import” option from another file or program. Then, click the “Next” button.

repair pst files with the inbox repair tool

2. Try Outlook Recovery Toolbox

Outlook Recovery Toolbox is known as an efficient and effective method to repair damaged or corrupted data. Later, you can save them into a new PST file. This tool supports almost all Outlook versions, including 2007, 2010, 2013, 2016, and 2019. Let’s get into the specifics of how this method works.

Step 1. Download the Recovery Toolbox for Outlook and install it on your device.

Step 2. Run the toolbox and select a corrupt PST file on the main interface. Then, hit the “Next” button, as shown below.

choose a pst file

Step 3. It is time to choose the recovery mode.

select the recovery mode

Step 4. Now, you will be able to view the contents of your PST file.

view contents of a pst file

Step 5. Next, choose the folder where you want to save the repaired data.

Step 6. Choose the “Save as PST file” mode and hit the “Save” button.

save the repaired pst data

3. Repair a Corrupt PST File Online

Recovery Toolbox Online does not ask you to download and install any tool on your system. You can simply visit this site and start repairing your corrupted or damaged PST data files. It supports all devices, like iOS, macOS, Android, and PC. The steps to follow this online technique are as follows.

Step 1. Tap on the “Select” button to upload your corrupt PST file.

Step 2. Next, provide the tool with your valid email address and hit the “Continue” button.

choose the corrupt pst file

Step 3. Wait for some time until your file is repaired. Then, click on the “Download” button to save the repaired PST file. You can also preview it before downloading.

download the repaired pst file

Part 3: OST Repair | Repair Outlook OST for Free

In nature, OST and PST files are almost the same. The only difference is that the OST files work offline. You can call them a copy of your shared data. When you struggle to connect to the Exchange server, you can simply access your data via OST files.

Is your OST file corrupted or damaged for no reason? Are you concerned about the data it has? Worried about losing important information? Just relax! There are a couple of ways to fix this problem, out of which the three most effective methods are given below. Let’s look at what they have for you inside.

1. Regenerate Your OST File

This method enables you to access your corrupted OST file just by following a few steps, as listed below.

Step 1. Go to the “Control Panel” and tap on the “Mail” option. If you want to choose a different profile, you can select the “Show Profile” option and click “Properties”.

Step 2. Now, tap on the “Email Accounts” option to proceed with the OST repair process.

repair a corrupt ost file by regenerating it

Step 3. In the “Email” tab, click on “Exchange account,” and select “Change”.

change the exchange account

Step 4. Check the “Use Cached Exchange Mode” box, as shown below. Next, hit the “More Settings” button.

check more settings

2. Use ScanPST.exe

It is a pre-built inbox repair tool to fix your corrupted OST files, as discussed earlier. As soon as you import your file into the tool, it starts scanning for all issues and errors. Once all are highlighted, it starts to fix them all.

Is the issue still alive? Concerned about permanent data loss? Worry not! Give the below-listed method a try. It may help you get over the line.

3. Disable Firewall Settings

If your Outlook is still not working properly, you can check your firewall or antivirus tool. If they are already enabled, make them disabled and restart your Outlook application.

Though this technique does not work every time you struggle with opening Microsoft Outlook, it can help you, in some cases, repair your OST files instantly. To disable antivirus and all plugins, try starting your Outlook app in safe mode.

Every Windows may have a different scenario to disable the firewall settings. If you use Windows 10, you can follow the steps below to disable these settings.

Step 1. Type “Control Panel” in the search bar of your Windows.

find the control panel

Step 2. Next, click on the Control Panel and open it right away.

open the windows control panel

Step 3. Look for the “System and Security” option on the screen, as shown below.

enter the system and security settings

Step 4. Next, tap on the “Windows Defender Firewall” option.

open windows defender firewall

Step 5. It is time to tap on “Turn Windows Defender Firewall on or off”.

turn on off windows firewall defender

Step 6. Next, under the “Private network settings” and “Public network settings,” click on the radio button, “Turn off Windows Defender Firewall (not recommended)”.

Step 7. Now, just hit the “OK” button, and you are done with repairing your corrupt OST file.

Following these 7 steps will help you disable the firewall settings in Windows 10.

Below, we have presented the most effective and proven tool to fix your corrupted PST and OST files professionally. Let’s look into the potential it has and understand what exactly makes it a credible and trusted tool across the world.

Part 4: Most Effective | Using Professional Outlook Repair Tool to Fix Corrupt PST & OST Fileshot

Outlook will not work properly if there is some issues in the PST/OST file. If you are looking for a Outlook PST/OST repair tool free, then Wondershare Repairit for Email is what you are looking for. It helps recovers e-mails, attachments, tasks, notes, etc. You can even preview the data inside the PST/OST file before you repair and save it.

Whenever you come across any issues while using Outlook, Repairit is going to help you out. Large PST/OST files over 4 GB can also be repaired using this tool.

  • 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.

  • Restore Outlook Emails deleted for a long time 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).

Here are the steps to install and use Repair for Email.

Step 1: First of all, you need to download Repairit and install it on your device, then click the "+Select File" button to upload your corrupt files.

file selected

Then select the corrupt PST/OST file by clicking the "Repair" button to start the PST/OST repair process.

start repair pst

Step 2: Repair the corrupt PST/OST files.

Repairit is now fixing the uploaded PST file, you can see the repairing progress and just wait for a few seconds. Any lost data will be restored and when the process finishes, you will see a Repair Complete screen.

repair in progress

Step 3: Before saving any data or repaired file, Repairit will allow you to preview the content inside the file. Click on "Save" to save the repaired file at your desired location.

preview of the file


PST files are what store the data and content of your Outlook account. All mails, attachments, and other stuff are stored here. OST files are nothing but just offline copies of the online Outlook data. Users come across a variety of issues when there is any issue with PST files and need to repair Outlook PST file

You will need to repair the PST and OST files if you want Outlook to function properly. Use a reliable tool like Wondershare Repairit for Email to easily scan PST files and repair it. You can restore all the data inside the PST file and save it to a new location. In the above article we saw various ways to repair both OST and PST files.