Outlook OST File Location: How to Find It? How to Back up It?

This guide explains how to locate and manage your Outlook OST files, including backup strategies. Outlook uses OST and PST files to store data; these are typically hidden. This post details how to find them and optionally change their storage location.

Locating Your Outlook OST File:

There are two methods to find your OST file:

Method 1: Using File Explorer

1. Open File Explorer (Windows key E).
2. Navigate to the appropriate folder based on your Outlook version:
   • Outlook 2007: C:\Users\User Name\AppData\Local\Microsoft\Outlook
   • Outlook 2010: Documents\Outlook Files\
   • Outlook 2013/2016/2019: C:\Users\User Name\AppData\Local\Microsoft\Outlook

Method 2: Using Outlook

1. Open Outlook. Go to File > Info > Account Settings > Account Settings....
2. Select the Data Files tab. Locate your OST file and click Open File Location....

Changing the Outlook OST File Location:

To change the default location:

1. Press Windows key R, type regedit, and press Enter.
2. Navigate to: HKEY_CURRENT_USER\Software\Microsoft\Office\xx.0\Outlook (replace xx.0 with your Outlook version number).
3. Right-click on Outlook, select New > Expandable String Value.
4. Name it ForceOSTPath and press Enter.
5. Right-click ForceOSTPath, select Modify.
6. Enter the desired new path in the Value data box.

Backing Up Your Outlook OST File:

Regular backups are crucial to prevent data loss. We recommend using backup software like MiniTool ShadowMaker.

1. Download and install MiniTool ShadowMaker.
2. Select the source (your OST file location) and destination for your backup. Configure scheduled backups under Options > Schedule Settings.
3. Click Back Up Now to initiate the backup.

This guide provides comprehensive instructions for locating, relocating, and backing up your Outlook OST files. Remember to replace placeholders like "User Name" and "xx.0" with your specific information.

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