Stellar Converter for OST for Windows

By Stellar
Trial version
User Rating

Used Stellar Converter for OST for Windows?

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Editors’ Review

Download.com staffFebruary 26, 2026

This software reliably converts inaccessible OST files into PST format, preserving all mailbox data. It offers robust features for easy data extraction and recovery.

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eFax Messenger Plus

Trial version

Pros
- Converts large-sized OST files without performance issues.
- Auto-locates OST files for quick scanning.
- Preserves original folder structure and deleted emails.
- Provides an enhanced preview of converted mailbox items.
- Converts encrypted OST files and auto-splits large PST files.
Cons
- Free version limits conversion to 20 emails per folder.
- No mention of direct cloud migration support beyond Live Exchange.

Stellar Converter for OST for Windows

By Stellar
Trial version
User Rating

Used Stellar Converter for OST for Windows?

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Full Specifications

GENERAL

Release: September 22, 2022

Latest update: February 26, 2026

Version: 13.0.0.0

OPERATING SYSTEMS

Platform: Windows

Operating System

Windows 7
Windows 11
Windows 10
Windows 8

POPULARITY

Total Downloads: 21,857

Downloads Last Week: 0

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Last Updated

User Reviews

4.3/5

33 User Votes

Pretty satisfied with the results!
KellyRoweApril 3, 2018
Pros
Quick conversion, Precise PST
Cons
Not one which I could find.
Summary
Needed a software to convert an old OST because I wanted to transfer all the mails and contacts to my current Outlook profile. Glad that I found this software.
Best software for quick OST file conversion
jackrussell0285April 2, 2018
Pros
Very nice GUI.
Cons
No cons found.
Summary
Perfect software for OST to PST file conversion. Avail 10% discount benefits now: https://www.coupondey.com/ost-to-pst-converter.php
The tool is brilliant
KelvinjamesadoMarch 6, 2018
Pros
Recognizes Orphaned OST files easily. Fast paced conversion
Cons
No problems with the software
Summary
I was on a business trip and suddenly out of nowhere "cannot start microsoft outlook" popped open in front of me, since I'm a finance guy I had no idea about the origins of the error. So I frantically started searching for a solution to fix this issue as I needed the data which was on my Outlook to make a crucial business presentation which I needed to show for a very important meeting. On researching further, I found out that this error happens due to damage of setting file of Outlook software (I suspect this might be due to the unsecured Wifi which I connected at a restaurant). Thankfully I found Stellar OST to PST Converter with the help of which I was able to convert my damaged OST to PST and recover emails from it. I must say this is an ingenious software as it saved me from a humongous loss (close to $20k) as if my OST data would not have been available then the meeting wouldn't have been such a success.
Effortlessly transferred my OST file e-mails to Outlook
robertdan1December 8, 2017
Pros
Good UI, Affordable
Cons
No cons as the software completed the task for which i bought it for
Summary
I wanted to transfer data from my old mailbox to my Outlook 2016 and thankfully with the help of this brilliant tool. I was able to transfer more 25gb OST file with precision. The best part is that, even the attachments were transferred in the original state without any changes or issues, Smooth Experience!
Easiest and best way to rectify OST corruption.
ronaldgrgNovember 15, 2017
Pros
Great User Interface, Quick Conversion.
Cons
Purchasing the software is required since the demo version only save 20 items in each folder.
Summary
Thanks to Stellar OST to PST converter, I am able to refresh my Outlook which earlier was giving the error "0x8010f Data file cannot be accessed" on pressing the Send/Receive button. The best part of the software is that even a non-technical like me can also use it to repair their OST file effectively.
Performed the conversion with 100% accuracy
Lenny1992July 5, 2017
Pros
Error Free Conversion, Fast Scanning
Cons
None which I could find
Summary
I needed software which could convert an OST file to PST file without any fuss since I was facing server downtime due to server upgradation, after reading several positive review about Stellar OST to PST converter I decided to buy it, I must say this software hasn't disappointed me yet and has performed the conversion with 100% accuracy.
Impressive Software!!
blinksleekJanuary 5, 2017
Pros
Fast Scanning, Work on Corrupt OST file, Easy to use etc.
Cons
Not find any.
Summary
Whenever I tried to send or receive any email or try to sync it with Exchange server, I received this error message "The server could not be found. (Account: account name, POPserver: 'mail',Error Number:0x800ccc0d);. I searched in Google about the error & found the reason was the corruption of OST file. My offline storage tables also locked with some encryption, so it was a very challenging task to recover encrypted file. But fortunately, I got this amazing tool convert corrupted OST file to pst file. Impressive Software!!
PRODUCT DOES NOT WORK - SUPPORT A SHAM
cats2golfSeptember 2, 2016
Pros
ABSOLUTELY NOTHING - A WASTE OF MONEY
Cons
I called the non-toll-free support phone number twice today and both times was told the wait time was short (approx. 4 and 6 minutes, resp.). I waited almost 10 minutes both times, all the while being told, 'thank you for your patience...you are now 3...2...1st in line'...THEN, when I was finally to be connected to a support rep, someone picked up (BOTH TIMES) and immediately hung up (BOTH TIMES). I was trying to call because I have tried more than 5 times to run the software. I was able to download, install and register the software - not without issues, but finally did so. I then ran the scan of my very large OST file and the scan completed. The information within Stellar UI is completely junky and not usable, so saving to PST is critical. BUT, that is where the product stops working. It will NOT convert to PST...it hangs up at EXACTLY the same point in the conversion...at 1,530,921 KB on the nose. Since support is non-existent as far as I'm concerned, I'm requesting a refund
Summary
Support is not answering calls - you get hung up on after waiting for much longer than the estimated time. The scan might work - which is what you can do with the FREE software, but you will not/may not be able to convert to PST and without having a usable PST file, you've wasted the $99 to do so. DON'T WASTE THE MONEY!!
Worked perfectly
jonesrichardjr8October 29, 2015
Pros
Worked perfectly on corrupt OST file Fast conversion
Cons
Has every useful feature and each works perfectly, so I couldn't find any cons
Summary
I just want to say one thing - whenever you face any problem with OST file, whether it is related to corruption or errors, trust this software only and the problem will be resolved definitely.
Flawless converter
stephendecostaSeptember 20, 2015
Pros
Extracted data from my OST file successfully and saved into PST without modifying the original formatting
Cons
No cons but scanning takes a little bit time
Summary
I'm completely impressed with this Stellar OST to PST conversion tool which not only allowed me to recover all my important emails from my corrupt OST but also restored deleted emails as well. Thanks to Stellar for coming out with this amazing OST to PST converter.

Developer’s Description

Convert inaccessible OST files into Outlook PST files.