28 November 2025, 01:30 PM
I have some old PST files created in Outlook 2007 and 2010. Now, I am using Outlook 2021, and I want to upgrade these PST files so that they work properly in the latest version without any errors or data loss. Can anyone suggest the best and safest methods to upgrade old PST files to the latest Outlook versions? Are there any recommended tools or Outlook options for this process?
