Inbox Repair tool (Scanpst.exe) run multiple passes - Outlook
https://learn.microsoft.com/en-us/outlook/troubleshoot/data-files/inbox-repair-tool-scanpst-exe-run-multiple-passes
WEBJan 30, 2024 · In versions of Microsoft Outlook that are earlier than Microsoft Outlook 2016, version 1807, the Inbox Repair tool (Scanpst.exe) can run only a single pass to scan a damaged Outlook data file (.pst) or Offline Outlook data file ( .ost ). However, multiple passes are sometimes required to fix all errors.
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