If you are unable to access your old OST files without the installation of Exchange Server environment, in such situation, you need to use a third party tool like OST File Viewer. This application helps you to read & view OST files easily without the installation of MS Outlook & Exchange Server environment. There are advanced features in OST File Viewer software as below:
1. Read & View Emails OST files with attachments without the installation of MS Outlook & Exchange Server environment.
2. Option of Dual-Scanning Modes to scan OST files.
3. Software is available for free of cost to download.
4. Open OST file having minor corruptions.
OST File Viewer software, easy supported all Windows OS, including Windows 8.1.