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Where Is ScanPST Located in Windows: Find Outlook Repair Tool Quickly with This Guide

Microsoft Outlook is one of the most widely used email clients in the world, but like any application, it can encounter errors—especially when working with PST (Personal Storage Table) files. When Outlook data files become corrupted, the built-in Inbox Repair Tool, commonly known as ScanPST.exe, is often the first solution users turn to. However, many people struggle with one simple problem: Where is ScanPST located in Windows?

TL;DR: ScanPST.exe is the built-in Microsoft Outlook Inbox Repair Tool used to fix corrupted PST files. Its location depends on your Outlook version and whether you are using 32-bit or 64-bit Office. It is typically found in the Microsoft Office installation folder under Program Files. This guide explains exactly where to find it and how to use it quickly.

What Is ScanPST and Why It Matters

ScanPST.exe is Microsoft’s official utility for diagnosing and repairing corrupted Outlook PST files. These files store emails, contacts, calendars, and other mailbox data. If they become damaged, users may experience:

  • Outlook failing to open
  • Error messages when accessing folders
  • Emails disappearing
  • Outlook crashing unexpectedly
  • Slow performance

The Inbox Repair Tool scans the PST file structure and attempts to correct inconsistencies. It is a first-level troubleshooting solution before moving to advanced repair methods.

Where Is ScanPST Located in Windows?

The exact location of ScanPST depends on three main factors:

  • Your Outlook version
  • Whether you installed 32-bit or 64-bit Office
  • Your Windows version

In most modern systems (Windows 10 and Windows 11), ScanPST is located in one of the following directories.

Common Locations for Microsoft 365, Outlook 2019, 2021

64-bit Office on 64-bit Windows:

C:\Program Files\Microsoft Office\root\OfficeXX\

32-bit Office on 64-bit Windows:

C:\Program Files (x86)\Microsoft Office\root\OfficeXX\

Replace OfficeXX with your version number:

  • Office16 – Outlook 2016, 2019, 2021, Microsoft 365

Example full path:

C:\Program Files\Microsoft Office\root\Office16\ScanPST.exe

Older Outlook Versions

If you’re using older standalone versions, try these paths:

Outlook 2013:

C:\Program Files (x86)\Microsoft Office\Office15\

Outlook 2010:

C:\Program Files (x86)\Microsoft Office\Office14\

Outlook 2007:

C:\Program Files (x86)\Microsoft Office\Office12\

Once you open the corresponding folder, look for ScanPST.exe.

How to Quickly Find ScanPST Using Windows Search

If manually navigating folders feels complicated, Windows Search is a faster option.

Method 1: Using the Start Menu

  1. Click the Start button.
  2. Type ScanPST.exe in the search bar.
  3. Press Enter.
  4. If found, right-click it and select Open file location.

Method 2: Using File Explorer Search

  1. Open File Explorer.
  2. Go to This PC.
  3. Type ScanPST.exe in the top-right search bar.
  4. Wait for Windows to locate the file.

This method works especially well if you are unsure which Office version is installed.

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How to Check Your Outlook Version

Before looking for ScanPST, it helps to confirm your Outlook version.

  1. Open Outlook.
  2. Click File.
  3. Select Office Account.
  4. Click About Outlook.

A window will appear displaying:

  • Outlook version number
  • 32-bit or 64-bit version

This information helps you locate the correct installation folder.

How to Use ScanPST Once You Find It

After locating ScanPST.exe, follow these steps to repair your PST file:

  1. Double-click ScanPST.exe.
  2. Click Browse to locate your PST file.
  3. Select the file and click Start.
  4. Let the scan complete.
  5. Click Repair if errors are found.

Default PST file locations are typically:

C:\Users\YourUsername\Documents\Outlook Files\

Or:

C:\Users\YourUsername\AppData\Local\Microsoft\Outlook\

Important Tip

Before starting the repair, make sure Outlook is completely closed. ScanPST will not work properly if the PST file is in use.

What If You Can’t Find ScanPST?

If you search your entire system and still cannot locate ScanPST, consider these possibilities:

  • Outlook may not be installed.
  • Office installation may be corrupted.
  • You may need to repair or reinstall Microsoft Office.

How to Repair Office Installation

  1. Go to Control Panel.
  2. Select Programs and Features.
  3. Find Microsoft Office.
  4. Click Change.
  5. Select Quick Repair or Online Repair.

This process often restores missing components, including ScanPST.exe.

Common Issues When Using ScanPST

While ScanPST is useful, it has limitations. Common problems include:

  • It may not fix severely corrupted PST files.
  • The repair process can take a long time for large files.
  • Recovered folders may appear as “Lost and Found.”
  • Some emails may not be fully restored.

For minor corruption, ScanPST is usually enough. For advanced damage, additional recovery methods may be necessary.

How Long Does ScanPST Take?

The repair duration depends on PST file size:

  • Under 1 GB: Usually a few minutes
  • 1–5 GB: 10–30 minutes
  • Over 10 GB: Up to several hours

The tool may need to run multiple passes to fully repair the file.

Tips to Prevent PST Corruption

Prevention is always better than repair. Outlook users can reduce risk by:

  • Keeping PST files under 20 GB
  • Closing Outlook properly every time
  • Avoiding forced shutdowns
  • Storing PST files on local drives instead of network drives
  • Keeping Office updated

Regular backups also ensure data safety in case repair fails.

FAQ: Where Is ScanPST Located in Windows?

1. Is ScanPST included with all Outlook versions?

Yes, ScanPST.exe is included with all desktop versions of Microsoft Outlook. However, it may not be available with web-based Outlook or certain enterprise configurations.

2. Why can’t I find ScanPST in my Office folder?

You might be looking in the wrong version folder, or Office may be installed in Program Files (x86). Try using Windows Search or repairing Office installation.

3. Does Windows have ScanPST built in?

No. ScanPST is part of Microsoft Outlook, not Windows itself. It is installed alongside Office applications.

4. Can ScanPST repair OST files?

ScanPST is primarily designed for PST files. OST files typically require a rebuild process through Outlook account settings.

5. Is ScanPST safe to use?

Yes. It is an official Microsoft tool. However, backing up your PST file before repair is strongly recommended.

6. What if ScanPST fails to repair my file?

If multiple repair attempts fail, the corruption may be severe. In such cases, restoring from backup or using advanced recovery solutions may be necessary.

7. Can I move ScanPST to the desktop for quick access?

Yes. You can right-click ScanPST.exe and create a desktop shortcut for easier access in the future.

Finding ScanPST in Windows is not difficult once you understand how Office organizes its installation folders. Whether using Microsoft 365 or an older version, knowing where to look can save valuable troubleshooting time. With the steps outlined above, users can quickly locate the Inbox Repair Tool and restore Outlook functionality with confidence.

Published on April 11, 2026 under .

Emily Harris