OST files can quickly turn into a problem when Outlook profiles stop working. I faced this after a company-wide system refresh where old machines were retired but their OST files were still needed for compliance reasons. Manual steps to
convert OST to PST sounded simple on paper, but they all required Outlook access with the original Exchange account, which no longer existed. After multiple failed attempts, I tried the
SysInfo OST to PST Converter, and the difference was clear. The tool loaded the OST file directly, displayed a complete preview, and converted everything into a clean PST without modifying the source data. Folder hierarchy, email metadata, and attachments were preserved properly. For long-term data retention or legal needs, this approach felt far more reliable than manual exports that depend on active profiles.
Locked
