4Team OST2 for Windows

Name: 4Team OST2
Rating: 3.7 (52 reviews)
Author: 4Team Corporation

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Editors’ Review

Download.com staffFebruary 26, 2026

This tool converts OST to PST files, making inaccessible Exchange data accessible in Outlook. It supports various platforms and offers a simple conversion process.

Pros
- Converts OST to PST files, even inaccessible ones.
- Supports Outlook, Exchange, Office 365, and Google Suite.
- Scans for OST and PST files on your computer.
- Simple, user-friendly conversion process.
- Helps recover Exchange mailbox data.
Cons
- Free version limits conversions to 5 items per folder.
- Full functionality requires the Enterprise Edition.

4Team OST2 for Windows

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Full Specifications

GENERAL

Release: June 19, 2019

Latest update: February 26, 2026

Version: 2.13.0028

OPERATING SYSTEMS

Platform: Windows

Operating System

Windows 8
Windows 7
Windows 10
Windows Vista
Windows 2003
Windows NT
Windows Server

Additional Requirements: Microsoft Outlook 2002 or up, Exchange Server 2003 or up

POPULARITY

Total Downloads: 36,751

Downloads Last Week: 13

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Last Updated

User Reviews

3.7/5

52 User Votes

It's like virus
JmacersApril 15, 2017
Pros
I down loaded found out I needed to pay to use. Closed it down and then kept getting messages about OST2, great if you want that kind of thing.
Cons
I down loaded found out I needed to pay to use. Closed it down and kept getting messages about OST2. Seems it left a process to blast me with annoying message about the software.
Summary
I don't trust companies that do that kind of thing. What else have they done? attached spyware or something else? makes you wonder.
Perfect solution to recover OST file
miguelsancezFebruary 1, 2017
Pros
Perfect solution to recover OST file. OST to PST converter tool smoothly recovers OST files troubles and transfer OST file to PST file format. This is a secure way to convert OST file to PST file format.
Cons
At the moment, I don't see anything bad about the software
Summary
Great product for conversion
jasperhult1January 31, 2017
Pros
Great product, I was looking for a software to convert ost files for a long time, but it was too expensive. OST2 works well and the interface is simple as it can be. The price is also good comparing to other solutions that I have found.
Cons
I cannot complain about anything for now
Summary
Great Free Tool
derekponoulaceJanuary 30, 2017
Pros
I always wanted to transfer my Exchange account data to my home computer and with OST2 I managed to do that without any troubles. Interface is very clear and simple, easy to find everything you need.
Cons
No cons for now
Summary
Great Free conversion software
charleshhollingerJanuary 27, 2017
Pros
The product is working well and I really like the fact that it is free, since most of these solutions for exchange servers are quite expensive. I didn't buy the full version, because at this time I don't need it, the free version is enough for me, but if I ever need all the features, I'd totally buy OST2, because it has a decent price.
Cons
Free version was enough for me, and I don't see any cons in it.
Summary
Good tool for moving Exchange information
barrywatson1January 26, 2017
Pros
My company just moved to the Microsoft Exchange, and we had to find the solution to convert the pst files to ost. I have found this program via the internet and it works perfectly. We moved all the connected OST files without any struggles. I'd highly recommend this company.
Cons
We only used the free version and I cannot say anything bad about it. Haven't tried the enterprise edition.
Summary
Overall, good conversion software
davisonarthurJanuary 25, 2017
Pros
Great new version. Fast and easy OST file conversion to PST. I couldn't find better software in the market that it is so easy to use and does what I need.
Cons
The enterprise edition is quite expensive
Summary
Great solution to recover OST file
todddouggJanuary 23, 2017
Pros
OST2 converted and recovered OST file, so it could be opened in Outlook. OST2 is a life saver, I thought that I lost all my information, but OST2 successfully converted the file to PST, so I was able to open it in Outlook.
Cons
Nothing wrong
Summary
Great tool to recover Exchange accounts data
lindawoods1January 19, 2017
Pros
After Exchange Server crash our company needed a solution how to recover the information. We had over 50 workstations without any access to the accounts data. After the OST to PST conversion all our valuable information was accessible again, I must say that OST2 saved the company and lots of money. And compared to what we would have lost, the software costs nothing.
Cons
None, since it saved all our valuable data and we couldn't be happier.
Summary
secure way to convert OST file to PST file format.
FosterJames1January 19, 2017
Pros
Even if you need to convert big OST files, in my case it was around 12GB, the conversion process went smoothly, completed in a very short time and it kept the structure of my mailbox. Highly recommended if you need to secure or recover your mailbox.
Cons
User interface looks a bit old, but this software is not about the looks, it's about what it does.
Summary

Developer’s Description

By 4Team Corporation

Convert OST to PST and open Exchange data in Outlook.

Free OST to PST Converter. Convert OST to PST, even if files are inaccessible. OST2 Free Edition can convert up to 5 items in each folder of orphaned OST file. Also, with Free OST2 it is possible to scan for.OST files which are connected to Microsoft Outlook. Using OST2, you can import and export OST and PST files, data from and to Microsoft Outlook, Exchange, Office 365, Outlook.com, Google and G Suite.

You will be able to choose a specific OST or PST file or you can scan your computer and OST2 will find all OST and PST files. The Free OST2 version allows you to transfer up to 5 items from each folder. Using Enterprise Edition convert and transfer all OST files which are linked or unlinked to Microsoft Outlook. Use OST2 to transfer data from Exchange to Microsoft Outlook, make your Exchange account e-mails, calendar, contacts, and other items accessible through Outlook. To prevent Offline Storage .ost file's data loss, back up data as a PST file. In case of the Exchange Server crash, downtime or accidental user account deletion, you will be able to recover Exchange mailbox folders by opening the converted PST file in Outlook. Convert files in a couple of clicks - select an OST file and choose the location where you want to save the PST file.

4Team OST2 for Windows

Editors’ Review

Pros

Cons

4Team OST2 for Windows

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User Reviews

It's like virus

Perfect solution to recover OST file

Great product for conversion

Great Free Tool

Great Free conversion software

Good tool for moving Exchange information

Overall, good conversion software

Great solution to recover OST file

Great tool to recover Exchange accounts data

secure way to convert OST file to PST file format.

Developer’s Description