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6 Top Reasons Where OST to PST Conversion Is A Need

Reason behind to attempt OST to PST Conversion


Before we start with the possible reasons behind OST PST Conversion, let’s find out all about OST and PST.



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OST and PST are Outlook data files. OST files shortened for Offline Storage Table and PST for Personal Storage Table. Both these Outlook data files store the same type of mailbox. Most important to understand here, OST and PST are different from each other. However, the situation appears when we need to convert OST into PST. There might be several reasons behind the conversion and all of them are discussed below:

Find out the difference between OST and PST:


Outlook is an email application that offers immense features to fulfill the messaging requirements in businesses and organizations. In an organizational environment, the Outlook email client is used for carrying out internal as well as external communication. In addition to emailing clients, it also works as a personal information manager. It creates Outlook data for storing email messages, addresses, calendars, tasks, notes, and attachments. As already told, there are two types of Outlook data files - OST and PST.


In case, if you are using Outlook as a stand-alone application, it results in creating a PST file for storing mailbox data. A PST file is used for POP3, IMAP, and web-based email accounts while an OST file is created when Outlook profile gets connected to MS Exchange server and Cache Exchange mode is enabled. OST file stores the email box data in an offline mode on the local computer system. OST file works as a mirror image of MS Outlook mailbox data on Exchange. OST file gives you the facility to work even when there is no network connection. Later when you log in to your MS Exchange account after the connection is re-established, all the changes get synchronized in Exchange folder.

Why opt for converting OST to PST?


In the current scenario, OST to PST Conversion is high in demand. Do you know exactly the reason behind this conversion? Well, many reasons are responsible behind this OST PST migration. Check out the six possible causes where the import of OST into OST is an urgent requirement.

  • Exchange Server Crash: Computer applications are prone to crash. There are various causes due to which the Exchange server may lead to crash down. Most often, MS Exchange server leads to crash because of virus infection, software malfunctioning, inapt power failure, and so on. These situations do not create a connection to the MS Exchange server until and unless you repair it. Though, it may take a little time when it is to repair the Exchange server. Now, you have an OST file that cannot be used online. To use OST mailbox data in online mode, make a conversion of OST to PST.
  • Change in Job: Your MS Outlook profile was connected to Exchange in the organization where you were previously working. If you have moved to the new work environment, you have your OST file but you cannot use it online. There is trouble in using the OST file. It can be opened on the system where it is created. If you want to use the OST file, then make a conversion of OST PST immediately.
  • Data Migration: OST PST migration becomes an important task in the situation where you are migrating from one place to another. Suppose your organization is moving to a new place, you need to move all the business data to a different system. Though an OST file can be opened only in that system where it is created, you can handle this problem by migrating OST in PST.
  • Exchange Server Undergoes for Maintenance: To have everything prim and proper, MS Exchange maintenance is undoubtedly a need. At the same time, if the Exchange server has gone for maintenance, it may affect the work in organizations. Sometimes, it is very crucial to access the mailbox data. Although the OST file comprises mailbox data, and it only works with synchronization with the MS Exchange Server. If it is an urgent need to access the mailbox data online, conduct OST in PST conversion.
  • Recover Data from OST File: Have you accidentally deleted mailbox data from the OST file? In this scenario, download the new OST file from the MS® Exchange server. This will help you to restore the data which is mistakenly deleted. How will you recover the data which is already deleted from the Exchange server? If you export OST in PST using professional software, you can solve the situation.
  • Mailbox Corruption: Computer machines are prone to corruption. An OST file is likely to get corrupted due to virus infection, software malfunctioning, inapt system shutdown, hard disk failure, shortage of space, exchange server crash, and so on. Microsoft understands this problem of users and it has provided an inbuilt utility such as the Integrity Check tool (scan ost utility). This tool is workable on mild corruption situations but not on severe corruption scenarios. it may not work if corruption is severe. For such a situation, move OST in PST with the help of an external software tool.

How to Export OST to PST?


For this conversion, there are two possible ways – The manual method and Third-Party software. The manual methods are free of cost but have certain drawbacks. On the other hand, external software is an advanced utility that supports converting OST into PST safely. This application comes with several user-friendly features. The set of features are as follows:

  • Execute Quick and Safe OST to PST conversion
  • It can convert OST files into PST without file size restriction
  • Recovers deleted OST file
  • Repairs damaged OST file effortlessly
  • Converts OST files in various file formats such as EML, HTML, vCard, and so on.
  • Supports working with all Outlook and Exchange editions.

Steps to use Gaintools OST Converter Software:

  • To begin the process, first install Gaintools OST Converter software.
download ost software
  • Next, click on the Browse button and add the OST file.
upload ost file
  • After the OST file is scanned get the preview of the OST files. Select only those items which you want to export in PST.
ost file preview
  • Next, choose the file format in which you want to export your OST file
export ost file
  • Select the location to save the PST file
output destination convert
  • In the next step, hit the Convert Now button and perform the conversion process.
convert now button

Wrapping Up

This article provides information about OST and PST files. Also, 6 top most reasons behind OST PST convert are explained. It is also discussed that OST Converter software is third-party software for OST to PST Conversion. Software steps are also explained.