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How to Upgrade ANSI PST to Unicode to Avoid Outlook Size Limits? - Printable Version

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How to Upgrade ANSI PST to Unicode to Avoid Outlook Size Limits? - Thomaswilson081 - 11-20-2025

I am currently dealing with an old Outlook PST file that is still in ANSI format, and it has almost reached the 2GB size limit. Because of this, Outlook has started freezing and showing errors. I have read that Unicode PST files support much larger size limits, so upgrading seems necessary. Can anyone guide me on how to convert or upgrade an ANSI PST to a Unicode PST safely without losing emails, contacts, or folder structure?


RE: How to Upgrade ANSI PST to Unicode to Avoid Outlook Size Limits? - sarahharris - 11-20-2025

If you're still experiencing issues like the 2GB limit, slow performance, or corruption in Outlook due to outdated ANSI PST files, Softaken PST Upgrade Software is an excellent solution. This tool allows you to easily upgrade old ANSI PST files to the Unicode PST format, increasing Outlook's storage limit & keeping your data completely safe.

Software Features
  • Fast conversion from ANSI to Unicode PST
  • Folders, attachments, & structure completely protected
  • Upgrade without opening Outlook
  • Reduced chance of corruption and improved performance
I used it for my large PST files & the results were excellent. If you're also experiencing Outlook size limit issues, be sure to try this tool.