pst files before upgrading! If you use IMAP in outlook 2013 or Outlook 2016 and are storing the calendar and contacts in 'This Computer Only' folders, export those files to a pst before upgrading to Windows 10. If a feature you use is negatively affected, you probably should upgrade Office too.Īlways make a backup of your Outlook. This page lists some of the issues you might run into. It just means that you might have issues and can't call Microsoft for help. While Microsoft may say the older Office versions are 'not compatible' or 'not supported' on the current version of Windows, this doesn't necessarily mean 'won't work'. Should you purchase the new version or save your money and keep the old (and less secure) version? Manufacturers and retailers often offer the current version of Office with the purchase of a new computer, sometimes with a discount.