How to install and work with Stellar Converter for OST


Stellar Converter for OST is used for converting inaccessible OST files into Outlook PST files. In subsequent paragraphs, I will be discussing what an .OST and PST files are. Stellar Converter for OST software is well trusted and effective tool capable of converting all mailbox components such as emails, attachments, contacts, calendars, etc. Stellar Converter for OST supports the various versions of Outlook 2019, 2016, 2013, 2010, etc. It will amaze you to know that the following languages are supported by Stellar Converter for OST: English, German, French, Italian, Spanish. I will be showing you very shortly how to install Stellar Converter for OST.

An Outlook Data File (.pst) contains your messages and other items. This means, OST files save data for offline use while PST stores data in the client’s local disk. With this information at hand, you will be able to understand when we start converting .OST files to .PST files.

Note: When you add an email account to Outlook, a local copy of your information is stored on your computer. This feature allows you to access your previously downloaded or synchronized email messages, calendar information, contacts, and tasks without an internet connection.

  • It will be worth mentioning that Microsoft 365 accounts, Exchange accounts, and accounts to store their information in Offline Outlook Data Files (.ost files).

Below are some of the capabilities of Stellar Converter for OST

  • It provides an option to find emails faster.
  • It provides a preview of converted mail items in a three-pane structure.
  • Able to save Mailbox Data in the following format: PST, MSG, EML, RTF, or PDF File Formats
  • Capable of converting large OST files to PST. Here there isn’t any size limitation.
  • Capable of converting encrypted OST into PST, and IMAP OST files.
  • Easily export OST file to Office 365 and Live Exchange, and
  • Capable of extracting Emails, Attachments, Notes, Journals, Tasks, Contacts, & Calendars

How to obtain the Software

To install Stellar Converter for OST, kindly proceed to their page to buy the product on the fly. There are numerous payment methods that can be utilized when purchasing this software. You can also request a purchase order. Kindly contact the Team and request a quotation. You can also purchase Stellar Converter for OST from the Microsoft Store.

System Requirements for Stellar OST to PST

  • Operating System: Windows 11, 10, 8.1, 8, 7
  • GBProcessorIntel: Compatible (x86, x64)Notes
  • Processor: Intel-compatible (x86, x64)
  • Memory: 4 GB minimum (8 GB recommended)
  • Hard Disk: 250 MB for installation files
  • Languages Available: En, De, Fr, It, Es

How to install Stellar Converter for OST

I will be installing the free version. Therefore, I will be clicking on the free download link as shown above. I will show you how to install the license later in this guide. Upon downloading this software, kindly navigate to the download folder and double-click on the StellarConverterforOST.


Select your installation language and click on ok as shown below.

On the welcome screen to the Stellar Converter for OST setup wizard, click Next.


Kindly accept the license agreement and click Next.


In the Select destination location, you can browse to a different location if you wish to. But I will strongly recommend not to. To proceed click on Next


On the Select Start Menu Folder, click on Next to continue. Here you can select a different folder if you wish to.


On the Select Additional Tasks, I will leave it as default and click on Next to proceed.


On the Ready to Install, click on Install as shown below.


As you can see, the installation of Stellar Converter for OST is very straightforward and fast. You can decide to uncheck the “Launch Stellar Converter for OST”. Click on Finish.


Note: If you have a UAC enabled, you will have to accept it in order to be able to launch the Stellar Converter for OST. Upon launching the Stellar Converter for OST, the following window will be opened.


Activating Stellar Converter for OST

In order to avoid the limitation placed on the free edition such as previewing the converted file and saving 20 items per folder. We certainly do not want this and therefore need to activate the software. If you do not already have the license, you can buy it also from the Stellar Converter for OST console as shown below. In this way, you will be redirected to the following link.


Therefore, if you have already purchased the Stellar OST Converter for OST, you can easily activate the product by clicking the Activation tab. In the Activation box, enter the product key and click Activate.


If the activation succeeds, you will be alerted with the window below. Click on Ok to close the window.


Where is my OST file stored?

Before proceeding to utilize Stella Converter for OST to convert OST to PST, I will like to explain what OST file is once again and how they can be accessed on your PC. OST files are Offline Storage Table folders that allow you to access Microsoft Outlook email when the system does not have access to the Internet. That is the OST file stores data items of MS Exchange Server in an offline mode. Before starting the procedure, first, locate the OST files in the system. To know the Outlook OST file location in the computer system, the user needs to follow the given steps:

Launch the "RUN diaog box" suing the shourtcut "Win+R" button.
In Run utility, type %AppData% and hit on the enter button.
Open Local folder >> Microsoft >> Outlook.
Navigate to the path AppData\Local\Microsoft\Outlook\username.ost

Steps to convert OST to PST using Stellar Converter for OST

To do this, you will have to launch the Stellar Converter for OST by clicking on the desktop icon. By default, the select OST File for conversion opens automatically. If this isn’t the case for you, click on Select Outlook OST in the Home tab in the top ribbon. A pop-up screen will appear to Browse or Find the OST file for conversion as shown below.

Step 1: Since I know the location, I will be using the Browse button. Click Browse if you know the location of the OST file. I will be showing you how to use the find button in step 2 below.

Next, Click Convert to initiate OST to PST conversion process as shown below. Note: This process is very fast, and this depends on the size of OST.!


As you can see, the conversion of the selected file is successful and the OST file has been converted to PST file. Click on OK


Step B: Using the find button. This window might be interesting to you. Click on the Find button to search the OST if its location is unknown. This might be helpful since users may find it difficult to locate the OST file.
– You can select a specific folder to search for the OST file just to narrow down your search.

As you can see below, we have got some results. I had to save this OST file in multiple locations just to be able to show that the Stellar Converter for OST will be able to locate all available OST files on your device.


As you can see, the search is still ongoing and you can not select an OST file and convert. If you have found the OST file you are looking for, please click on stop. You will be prompted with a Windows saying “Do you want to stop the current process”. Kindly click on Yes. As you can see, it is currently converting the selected outlook OST file.

After the conversion is completed, the software previews the Outlook mailbox folders. Now that the file has been converted, I will proceed to have it saved. As of the time of writing this article, Stellar Converter for OST supports exporting OST files to the following formats below.

  • PST
  • MSG
  • EML
  • RTF
  • HTML
  • PDF

On the home main user interface, the following Ribbons will be worth discussing before proceeding to saving the converted PST files, etc.

Home Ribbons (features)Explanation
Select Outlook OSTThis option is used to select or search for the OST file.
Save Converted FileThis option is used to save the converted OST file at your specified location
Find MessageThis option is used to search for specific emails and messages from the list of scanned emails.
Save ScanThis option is used to save the scanned information of the file
Load ScanThis option is used to load the saved scan file
Note: In order to be able to save converted PST files, you will need to have outlook installed. If Outlook isn't installed, a dialog box will appear stating that you should install 

As stated during the introductory session of this guide and installation, We stated that Stellar Converter for OST supports the following languages: English, German, French, Italian, Spanish. I will be showing how you can select a language your choice from the main Stellar Converter for the OST dashboard.


As you can see, I have selected German and it is my second favorite language. The wizard is in German now.


Stellar Support

Stellar has got an excellent support service that can also be reached from the Stellar Converter for OST. When you click on the “Support” icon, you will be redirected to the following support page. You can mail your queries at, if you need assistance with software registration at any point in time. You can also chat Live with an Online technician at


How to perform Automatic and Manual Updates

It will interest you to know that when updates are available, you will be notified as like every other IT system. Stellar releases updates for Stellar Converter for OST. This helps keep the software up-to-date and provide the tool with new functionality, feature, service, or any other information that can improve the working of the software.

Automatic Updates

As stated in the paragraph above, when the Stellar converter for PST is launched, and there are new updates available, the Update Wizard will appear along with the Stellar Converter for OST window.
– Click Next to start downloading the update files from the server. After the completion of the process, the software is updated to the latest version.
– When the update is complete, click on Finish to close the Update Wizard.

Manual Updates

To install updates manually, launch the Stellar Converter for OST. This will open the main user interface. This will check for both latest, minor, and major versions available online. While updating the software, it is recommended to close all the running programs.


If updates are available, the wizard will search for updates. If the new version is found a window will pop up indicating the availability of an update. But if there aren’t any new updates, you will be alerted as shown below. that the software is updated and that you should click on cancel to close the window.


From my demonstration so far, you will see how intuitive it is to work with this tool. Compared to other products online, I would recommend Stellar Converter for OST as it is very easy to download, install, and work with.

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1 year ago

MailVita OST to PST Converter for Mac Tool can the whole Outlook OST File data and re-open OST file into running PST file format. It also recovers OST file data along with whole corrupted Outlook OST email items such as – Inbox, outbox, sent mail, note, task, journals, and drafts, etc.

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