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Searching for Free Way to Convert OST to PST? Here is the Complete Solution

Published on 27 June 18

Offline Storage Table (OST) and Personal Storage Table (PST) both are data storage files of Microsoft Outlook. OST is an offline folder file used to store the Exchange Server data also, one can use this file to access the mailbox data even in the absence of internet connection. Whereas, PST is a local archive or storage file used to store emails, contacts, calendars and other data items on your computer. Well, the main difference between both file formats is that the PST is utilized for actual storage and the OST is used as cached storage. There may several conditions in which users might need to convert their OST files into PST. Thus, in this technical paper, we are going to disclose some free ways to convert OST to PST. However, before going to the solution section it is essential to understand the reasons for the same. So, let us get started!

Common Reasons to Convert OST to PST

  • Exchange mailboxes get deleted from the server
  • To take the backup of Exchange mailboxes
  • Unexpected crash in the Exchange Server
  • Switching the workplace or data recovery
  • Synchronization issue with Exchange Server
  • Abrupt MS Outlook crash or termination
  • Damage induced on the Exchange database
  • Accidental deletion of the user account
  • Downtime or maintenance of Exchange Server
  • Virus or Malware attacks on the email client

Top Techniques to Convert Outlook OST File to PST Free

Below are some manual tricks to convert OST files into PST. Follow the guidelines sequentially to avoid any kind of data loss issue.

#Method 1: Import and Export Technique

  • Launch MS Outlook application and click on the File tab.
  • Here, select Open and Export >> Import and Export
  • In the Import and Export wizard, choose Export to a file option and hit the Next button
  • Choose Outlook Data File (.pst) option and click on Next
  • Select the folder to which you need to export and click Next
  • Now, browse the location where you need to save the new PST and select the options regarding the duplicate data items

Note: You can protect your PST file via providing a password however, if you do not want this then you can skip the option.

#Method 2: Using Drag and Drop Technique

For this first, create a new PST file after that you can drag and drop all the folders into it and save. Follow below-mentioned steps:

  • Open MS Outlook application and create a new PST file in Outlook profile
  • Now, select and drag all the desired mailbox folders that you want to move into the newly created PST file

#Method 3: Save OST Emails to PST via Archiving

After enabling archiving, all the Outlook emails from OST files will be saved into a separate PST file. Also, this method helps users to keep the Outlook mailbox size optimum level via saving the older mailbox items into the archive folder. Below are the steps to create a mailbox archive to save the OST emails as PST:

  • Open MS Outlook application and click on File >> Options
  • Now, navigate to the Advanced >> Auto Archive Settings
  • Here, select the total number of days in which you want to run the auto archiving. Choose the folder to save this archived data file and click on OK button

After doing this, all the mailbox items from your OST file will be saved into the PST as per the archiving settings.

#Method 4: Forward by Emails

In case, if you have few OST files to convert then, you can email all of them to your personal email address. For this, you just need to select the items and choose the Forward option. If you are having several OST files, then, you can drag all the files to a new folder in My Documents. Then, zip this folder and email this zip file.

What if Free Way to Convert OST to PST Gets Failed?

As free solutions are easy and users can use them without any hassle. However, in some cases free methods do not work efficiently as well as they require technical expertise to execute. In such conditions, one can directly go for the professional approach, i.e., cheapest OST to PST Converter tool. This is one of the best third-party application that can easily export Outlook data from Offline OST to PST even without resulting any kind of data loss. Also, this software is fully safe and secure to download and run.

Final Verdict

In this article, we have discussed some free techniques to convert OST files into PST. Users can opt any approach according to their present requirements and preferences. Also, one can go for the automatic solution to perform a quick and safe OST to PST conversion.

This blog is listed under Development & Implementations Community

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  1. 24 July 21

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  3. 23 June 20

    You can Download ZOOK OST to PST Converter is most adorable solution to export and extract offline OST data into PST format. It easily converts OST to PST format to transfer and save Exchange OST to Outlook PST format. The tool enables user to access orphaned, IMAP, cached, crashed OST file into PST format which allows user to open OST file in Outlook. It has numerous advance features which enables user to perform the conversion from offline storage OST files into PST format in couple of clicks. The tool can easily support all the latest versions of Microsoft Outlook i.e. Outlook 2016, 2013, 2010, 2007, 2003, etc.Users can also test and check the capability of the utility which offers to convert 25 items from each folder of OST files into PST format without losing any data. Explore More:-

  4. 21 May 20

    Want to do OST conversion then you should use SysOZ OST to PST Converter. This tool is used by many big business houses and IT Persons also. This tool is also very safe to do the converting. By using this tool you can convert your data into various formats like PST, EML, EMLX, vCard, vCal, MSG, and MBOX. This tool also support cloud-based applications like Live Exchange Server and Office 365. Read More:

  5. 21 October 19

    I want to add Syscurve OST to PST Converter application on the list. This tool has some most advanced features that make the conversion very easy. More information visit:

  6. 05 October 19

    I want to suggest one of the best tool SysBud OST to PST Converter which helps me to export my inaccessible OST file into PST file format. This single wizard solution software perfectly migrates multiple & large size OST files into Outlook PST format and compatible with all versions of outlook and windows OS. Thanks, Sysbud team to help me. If you also want to great solution in OST to PST migration, visit on the official website of SysBud Software.

  7. 03 October 18


  8. 05 September 18

    OST to PST Converter software is for that user who needs to repair and recover corrupted OST files from Outlook OST files without any type change database. This OST to PST Converter smoothly convert whole data from OST files into PST files and save it in several useful formats such as EML, MSG, MBOX, Archive and PST without facing any kind of problems. To get more info at:-

  9. 19 July 18

    Recently, I used an Advanced OST to PST Converter tool for converting OST file to PST file format. I had great experience with this utility. It is also designed to instantly fix common and unique OST file errors, including Error Code 0x8004103b, OST internal errors, service-specific error, and much more. if you want specific files to be converted, you can also do that too. You can also export your OST emails into various formats aside from PST. Options include EML, MSG, RTF, HTML, or PDF. and more. For more info, visit

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