Softaken Upgrade PST Pro
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Upgrade PST Tool – Fix 2 GB ANSI Limit · ANSI to Unicode

Overcome the 2 GB PST file size limit:convert old ANSI PST to modern Unicode PST (up to 20 GB / 50 GB+) without data loss.

Standalone Tool · No Outlook Installation Required
(Average Rating 4.4Based on 92rating)

Convert the latest updated PST for latest version of MS Outlook. Convert ANSI PST in Outlook 2000/2002 to Unicode PST for 2010,2007/2003 and other Outlook editions. Both ANSI and Unicodeare two character encodings. ANSI is older while Unicode is an upgraded version of PST. A Unicode PST format is taken by default for MS Outlook 2010,2003 and 2007. It supports multiple character sets,provides ultimate storage capacity which is 20 GB or 50 GB. ANSI supports just 2 gigabytes (2GB) storage if an ANSI file size goes over 2GB,it is vulnerable to corruption.

  • Fix the 2 GB PST size limit— upgrade PST file size from 2GB to unlimited (20 GB / 50 GB Unicode capacity)
  • Convert ANSI to Unicode PST (Outlook 2000/2002 ANSI →modern Unicode PST)
  • Support all MS Outlook versions (including Outlook 2016,2013,2010,2007,2003 &other)
  • No Outlook Installation required— independent standalone utility
  • Save upgraded UNICODE PST to your selected location (original ANSI stays for backup)
  • Batch conversion — Add File or Add Folder with PST preview
  • Password-protected PST supported
  • Free Demo available for testing (first 10 items per folder)

Now,a remarkable solution is available in form of Softaken Upgrade PST Pro. The application easily upgrades ANSI to Unicode. It is an independent utility that works under modern algorithm to offer error free conversion.

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ANSI PST (2 GB) →Unicode PST (20 GB / 50 GB+)

Old ANSI PST · 2 GB LimitSoftaken Upgrade PST ProUnicode PST · Large Capacity

Input ANSI · Output Unicode

Input (ANSI PST)

Outlook 2002 / XPOutlook 2000Older ANSI PST files

Output (Unicode PST)

Outlook 2016 / 2013Outlook 2010 / 2007 / 2003Other Outlook editions20 GB / 50 GB capacity

How Upgrade PST ProWorks

1

Add ANSI PST

Click Add File or Add Folder and upload the desired PST file(s). Preview is available.

Upgrade PST Pro – Add File or Add Folder
2

Choose Output Location

Select the path where you want to save the resultant Unicode PST file.

Upgrade PST Pro – Preview PST files
3

Start Converting

Hit Start Converting to upgrade ANSI to Unicode and expand storage capacity.

Upgrade PST Pro – Convert to Unicode

Watch Upgrade PST ProDemo

Fix the 2 GB PST limit in minutes

See Softaken Upgrade PST Pro convert old ANSI PST files into modern Unicode PST with larger storage — no Outlook install needed.

  • Add single PST or a full folder of files
  • Upgrade ANSI to Unicode without Outlook
  • Save output to your chosen folder
  • Keep folder hierarchy and content intact
Watch on YouTubeScreenshotsUser GuideVideo Tutorial Page

Safe Upgrade · Original File Protected

Save Resultant PST Where You Choose

Select an output location for the upgraded Unicode PST. The tool writes a fresh converted file to your chosen folder — your original ANSI PST is not deleted by the process.

No Outlook Installation Required

Independent Windows utility. Performs ANSI to Unicode conversion alone — no MS Outlook or third-party app needed on the PC.

PST Upgrade SoftwareSalient Features to Watch Out

Simple Individual Interface - Upgrade PST Pro feature

Simple Individual Interface

There is no technical expertise required to handle the tool. It is a simple yet advance conversion program developed in easy user interface so technical and non-technical users can easily use the program.

Convert Desirable Outlook Data - Upgrade PST Pro feature

Convert Desirable Outlook Data

For user's comfort and the desired result,the PST Upgrade offers to upgrade those PST files that are selected by users. Browse the tool to locate for the specific file that you want to convert.

Highly Supported - Support all Windows OS - Upgrade PST Pro

Highly Supported

This is a Windows utility,supports all major editions of Windows including Windows 11,10,8.1,8,7 and other. No interruptions are faced by the users on their system while you are performing other tasks with this application for conversion of ANSI to UNICODE PST.

Error Free Conversion - Upgrade PST Pro feature

Error Free Conversion

It converts ANSI to Unicode with ease. Conversion process is simple and straight. No file is damaged. The tool preserves content structure,double byte characters like Chinese,Japanese and Korean and signs like comma,hyphen,dash etc.

Batch Conversion facility - Upgrade PST Pro feature

Batch Conversion facility

You can make conversion of multiple PST files at one go. You can simply load an entire folder containing multiple PST files and can smoothly perform the conversion maintaining complete accuracy.

Independent Program - No Outlook Installation Required - Upgrade PST Pro

Independent Program

ANSI to UNICODE PST Converter tool performs the conversion solely. It doesn't need installation of MS Outlook to perform the task. Not any other tool is required.

Keep folder hierarchy maintained - Upgrade PST Pro feature

Keep folder hierarchy maintained

Upgrade PST tool does not misplace any folder from its place. The whole data and the folder sequences are well maintained when you convert ANSI PST into UNICODE PST format.

Tools FAQ's

ANSI and Unicode are two character encodings used for Outlook PST files. ANSI is the older format and supports only about 2 GB storage — if an ANSI file grows beyond 2 GB,it becomes vulnerable to corruption. Unicode is the upgraded PST format used by default in Outlook 2003,2007,2010 and newer editions. It supports multiple character sets and much larger capacity (typically 20 GB or 50 GB).
Yes. Softaken Upgrade PST Pro is designed to overcome the 2 GB ANSI PST size limit by converting your old ANSI PST into a modern Unicode PST with larger storage capacity (20 GB / 50 GB+),so Outlook can continue growing your mailbox without hitting that hard ANSI ceiling.
No. You choose an output location for the upgraded Unicode PST. The tool writes a fresh converted file to your selected folder. Your original ANSI PST is not deleted by the process,and the conversion is designed to be error-free while preserving content structure and folder hierarchy.
Yes. You can convert multiple PST files in one go. Use Add File for a single PST,or Add Folder to load an entire folder containing multiple PST files and perform batch conversion with accuracy.
Input ANSI PST typically comes from older Outlook editions such as Outlook 2000 and Outlook 2002/XP. Output Unicode PST works with Outlook 2016,2013,2010,2007,2003 and other Outlook editions. The tool supports all MS Outlook versions for this upgrade workflow.
The free demo lets you evaluate key functions of Upgrade PST Pro before purchasing. Demo conversion is limited to the first 10 items per folder. The full licensed version unlocks unlimited conversion.

You need to follow these simple steps to upgrade your PST file

  1. Run Upgrade PST Pro software
  2. Click Add File or Add Folder option and upload the desired PST file(s).
  3. Click Select Output location option and mention a path to save the resultant PST file.
  4. Hit Start Converting and the process of upgrading PST starts.
Yes,with this advance utility you can able to upgrade password protected .pst files.
No this software is specialized in changing ANSI to Unicode. It upgrades PST files and increases its size limit.
No,it doesn't need help of any third app. It performs conversion all alone.
Yes. Upgrade PST Pro keeps folder hierarchy maintained and does not misplace folders. It also preserves content structure,double-byte characters (such as Chinese,Japanese and Korean),and signs like comma,hyphen and dash during ANSI to Unicode conversion.

Software Specifications

System Requirement

ProcessorAny Pentium Class

Operating SystemWindows 11,10,8.1,8,7 &Other

Memory512 MB Minimum

Hard Disk100 MB of free space for software installation

Software Delivery

ElectronicVia Email

Minutes15

Interface Available

Language SupportedEnglish

Support OptionEmails,Chat &Skype

Download Guides

Installation Guide

User Manual

Purchase Related FAQs

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Feature Comparison of Upgrade PST - Trial and Licensed Version

Features
  • Upgrade PST Files
  • Convert ANSI to Unicode PST
  • Increase PST File Size for Unlimited
  • Add Multiple PST Files
  • Support Plain Text,RTF & HTML Formats
  • Support Outlook 2016/13 & Other
  • Support Windows 11/10/8/7/others
  • Limitation
  • Price
DEMO Version
  • First 10 items per folder
  • FREE
FULL Version
  • Unlimited
  • $29

Client Reviews

Poulin Daniel

Poulin Daniel Verified

IT Consultant · Canada

★★★★★
I have seen many applications that claim to convert ANSI PST to UNICODE but cannot perform the task safely. Softaken Upgrade PST Pro did the job effectively for me and I am very thankful to the team.
Kishor Dagia

Kishor Dagia Verified

Business Owner · India

★★★★★
For few weeks,my Outlook was not functioning properly. I tried many tricks but finally I feel very distressed. My friend suggested me Upgrade PST Tool and it worked great for me. A great product!
Veiko Vunder

Veiko Vunder Verified

Systems Admin · Estonia

★★★★★
I contacted the support team to know the requirements of PST Upgrade utility. They handled my queries and explained in detail to me. Really,the supporting team is pretty well.
Stefan Klaeser

Stefan Klaeser Verified

Office Professional · Germany

★★★★★
Your upgrade PST Pro tool worked great for me when I was in search of a perfect solution to increase the size of my Outlook. It worked in the desired manner for me.